CN102242528B - Method and device for coating anhydrous coatings on pulp fiber product surface by using dry process - Google Patents
Method and device for coating anhydrous coatings on pulp fiber product surface by using dry process Download PDFInfo
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- CN102242528B CN102242528B CN 201110198030 CN201110198030A CN102242528B CN 102242528 B CN102242528 B CN 102242528B CN 201110198030 CN201110198030 CN 201110198030 CN 201110198030 A CN201110198030 A CN 201110198030A CN 102242528 B CN102242528 B CN 102242528B
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Abstract
The invention discloses a method for coating anhydrous coatings on a pulp fiber product surface by using a dry process and a device for realizing the method. The device for coating the anhydrous coatings on the pulp fiber surface by using the dry process comprises a coatings tank used for holding the anhydrous coatings, an electrostatic spray-coating device provided with a nozzle, a gasless spray-coating device used for connecting the coatings tank and the nozzle of the electrostatic spray-coating device, a transmission unit used for transmitting a pulp fiber product, and a post-treatment unit used for drying and curing the coated pulp fiber product. According to the device disclosed by the invention, the processes of freezing hardening, electrostatic coating and hot-pressing curing are utilized to coat the prepared anhydrous coatings on the surface of the pulp fiber product, such that the appearance, physical performance and printing adaptability of the pulp fiber product can be improved. The method disclosed by the invention can be used for overcoming the disadvantages of low solid content and high moisture content of traditional coatings, meanwhile, the adopted electrostatic spray-coating method can be used for uniformly coating a layer of coatings on the surface of an irregular pulp molding product.
Description
Technical field
The present invention relates to a kind of paper pulp fiber product surface coating spraying method and device, especially a kind of paper pulp fiber product surface anhydrous coating dry method method of application and device.
Background technology
According to the data that State Statistics Bureau announces, about 7,200 ten thousand tons of the output of the cardboard of national paper in 2007,7,500 ten thousand tons of consumption figures increase by 11.5% compared with last year, and on basis in 2007, national paper in 2008 and production amount increase about 10%.Painting processing paper and cardboard are the paper that the road coating later of a kind of warp, press polish are handled, appearance effect, printing performance and the physical strength that a coating can improve paper coated on the body paper surface, satisfy special instructions for use, along with the development of Chinese national economy, society increases severely to the demand of coated printing paper and coating wrapping paper.
Paper pulp moulding product is to be main raw material with paper pulp (mainly being the secondary stock raw material), make through technical process such as size degradation, desanding, making beating, moulding, dehydration, drying and integers, be considered to substitute the EPS(foamed plastic) the best environmentally friendly packing material of packaging material, be widely used in the packing of products such as cutlery box, birds, beasts and eggs, fruit and beer.Spraying by the paper pulp moulding product surface, can improve the physical arrangement intensity of paper pulp moulding product greatly, particularly coating spraying, can significantly improve smoothness and the glossiness on paper pulp moulding product surface, to improve its printing adaptability energy, adapt to the requirement of different printing conditions, can improve the structural strength of layered product again, to adapt to the requirement of packing, can widen the range of application of paper pulp moulding product simultaneously.
Traditional paper coating process is directly to be that the aqueous-phase suspending shape coating of 30%-70% is coated on the body paper surface with solid content, this means that a large amount of water need evaporate by drier, this not only consumes big energy, studies show that, the coating evaporation drying accounts for 30% of paper production energy consumption, and in the paper dry run, the migration of adhesive can take place, cause paper quality to worsen.Simultaneously, the depth of water in the coating is gone into body paper, and fiber is produced back wet, run-inflation effect, and paper strength reduces.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of paper pulp fiber physical properties of articles and surface printing adaptability improved, but and the paper pulp fiber product surface anhydrous coating dry method method of application of energy savings; Simultaneously, the present invention also provides a kind of device of realizing that paper pulp fiber product surface anhydrous coating dry method applies.
For achieving the above object, the technical scheme that the present invention takes is: a kind of paper pulp fiber product surface anhydrous coating dry method applicator device comprises: the coatings tank that is used for holding anhydrous coating; Be provided with the electrostatic spraying device of nozzle; The airless spraying equipment that connects described coatings tank and described electrostatic spraying device nozzle; Be used for transmitting the delivery unit of paper pulp fiber goods; Be used for applying the post-processing unit that back paper pulp fiber product dried is solidified.The described electrostatic spraying device that is provided with nozzle not only can be used for the spraying of plane paper or cardboard, and can be used for the spraying on three-dimensional moulded paper pulp product in irregular shape surface, is widely used.And described electrostatic spraying device can be realized the anhydrous dry spraying to the paper pulp fiber goods, effectively improves paper pulp fiber product surface outward appearance, physical property and printing adaptability.
In a specific embodiment of paper pulp fiber product surface anhydrous coating dry method applicator device of the present invention, described delivery unit comprises smooth roller, deflector roll and the corrector roll that connects successively, be provided with freezing cure process device before the smooth roller of described delivery unit, described smooth roller is located at the front of described electrostatic spraying device, described deflector roll is located between described electrostatic spraying device and the described post-processing unit, and described corrector roll is located at the back of described post-processing unit.Preferably, described post-processing unit is the hot-press solidifying make-up machine, is provided with two relative hot pressing rollers up and down in the described hot-press solidifying make-up machine.The device of this kind structure is applicable to that the paper on plane or cardboard are carried out the anhydrous coating dry method to be applied, before the electrostatic spraying, the paper on plane or cardboard carry out freezing curing in described freezing curing system, so that the paper pulp fiber product surface is easy to set and the homogenising of coating, the freezing processing time is generally 3h, also can select as required more to grow or shorter cooling time.Described hot-press solidifying make-up machine is provided with two relative hot pressing rollers up and down, middlely constitutes the pressure area, heats simultaneously, can be preferably to the paper on described plane or cardboard is cured or ornamenting.
The method that paper pulp fiber product surface anhydrous coating dry method is applied is installed in a kind of utilization as mentioned above, and described pulp goods is paper or the cardboard on plane, and described method comprises:
Freezing sclerosis, with the paper pulp fiber goods by the freezing sclerosis of freezing curing system;
Electrostatic spraying, with the electrostatic spraying anhydrous coating in electrostatic spraying device of the paper pulp fiber goods after the freezing sclerosis, electric field pressure is 500KV-2000KV in the described electrostatic spraying device;
Hot-press solidifying, the paper pulp fiber goods after the electrostatic spraying are hot-forming and solidify, and described hot-press solidifying temperature is that 100-200 ℃, pressure are 10KN/m-800 KN/m, the hot-press solidifying time is the 20-50 millisecond.
Adopt this kind method that paper or the cardboard on plane are sprayed, the plane paper after the spraying or appearance, physical property and the printing adaptability of cardboard significantly improve, and have solved the big shortcoming of traditional coating solid content low moisture content.
In a specific embodiment of paper pulp fiber product surface anhydrous coating dry method applicator device of the present invention, described delivery unit comprises by transfer roller, driven roller, the closed conveyer belt that connects and composes from beginning to end of roller, idler roller, corrector roll and deflector roll later, and described transfer roller, driven roller, later roller, idler roller, corrector roll and deflector roll all are located at the front of described electrostatic spraying device, the back of described post-processing unit.Preferably, described post-processing unit is hot pressing gloss molding device, is provided with punch and the die that cooperatively interacts in the described hot pressing gloss molding device.The device of this kind structure is applicable to that the moulded paper pulp product to solid carries out the anhydrous coating dry method and applies, described transfer roller, driven roller, later roller, idler roller, corrector roll and deflector roll successively head and the tail connect and compose the circulating conveyer belt of sealing, can carry out electrostatic spraying to moulded paper pulp product in enormous quantities and handle, make things convenient for electrostatic spraying and the postprocessing working procedures of moulded paper pulp product.Three-dimensional moulded paper pulp product carries out mold pressing between the punch of hot pressing gloss molding device and die handles, and can be according to the shape of moulded paper pulp product, replace with shape and the size of lower punch and die, to adapt to the needs of moulded paper pulp product, make apparatus of the present invention applicable to difformity and big or small moulded paper pulp product.
The method that paper pulp fiber product surface anhydrous coating dry method is applied is installed in a kind of utilization as mentioned above, described paper pulp fiber goods are moulded paper pulp product, described method comprises: electrostatic spraying, with paper pulp fiber goods electrostatic spraying anhydrous coating in electrostatic spraying device, electric field pressure is 500KV-2000KV in the described electrostatic spraying device;
Hot-press solidifying, the hot-forming and curing with the paper pulp fiber goods after the electrostatic spraying, described hot-press solidifying pressure is 100KN/m-3000KN/m.
The present invention is described above for the method that moulded paper pulp product surface anhydrous coating dry method is applied, can apply one deck dope layer uniformly on the surface of special-shaped moulded paper pulp product in irregular shape, overcome in the prior art, special-shaped paper pulp molded article surface in irregular shape is difficult to apply the problem of uniform dope layer.
In the above-mentioned paper or the method that applies of cardboard and three-dimensional moulded paper pulp product surface anhydrous coating dry method to the plane, described anhydrous coating can be got by three kinds of method preparations: the one, and freeze-drying, be about to pigment, adhesive etc. by a certain amount of proportioning, after being made into coating suspension with conventional method, freezing under-40 ℃ high vacuum condition, high temperature heating subsequently, water removes from coating with the form of distillation and desorb, the product particle diameter that obtains is bigger, need in liquid nitrogen, to grind, obtain 50% the tranquil diameter of particle at last at the 5-15 mu m range; The 2nd, spray drying process is made into solid content by certain formulation for coating material and is about 30% suspension, and in vacuum drying chamber, by the rotary sprayer atomizing, heated-air drying can obtain product then, and 50% average diameter of particles is at the 20-25 mu m range; The 3rd, synthetic paint in supercritical fluid, adopting supercritical fluid is the reaction medium synthetic paint, most widely used supercritical fluid is carbon dioxide, the method for preparing anhydrous coating with supercritical carbon dioxide mainly contains two kinds, the one, polymerization obtains high polymer in supercritical carbon dioxide, then it is mixed by mechanical means with grinding calcium carbonate; The 2nd, pigment is added reactor before polymerisation, by the mixed polymerization reaction, reach the even coating of pigment and polymer.Preferably, the anhydrous coating that under the CO 2 supercritical condition, prepared by gluing monomer, pigment of described anhydrous coating.Preferably, described gluing monomer comprises organic gel allonge bodies such as methyl methacrylate, butyl acrylate, styrene; Described pigment comprises inorganic pigments such as grinding calcium carbonate, winnofil, nano-calcium carbonate, kaolin.
Device of the present invention is owing to be provided with electrostatic spraying device, can carry out dry spraying to the paper pulp fiber product surface, can not only improve paper pulp fiber physical properties of articles and surface printing adaptability, and avoid in the coating process interaction harmful between water and fiber, prevent the alligatoring of fiber suction swollen, cause the low and print surface gloss variation of paper pulp fiber goods print gloss.
Moulded paper pulp product to plane paper or cardboard and solid of the present invention carries out the method that the anhydrous coating dry method applies, do not need back wet dry run again, save a large amount of energy, reduce the evaporation equipment investment, overcome a difficult problem that influences the pulp fiber surface printing performance in the wet coating process, reduce the discharging of volatile organic compounds in the coating process simultaneously, improve operating environment.
Description of drawings
Fig. 1 is used for the structural representation of paper or paperboard surface anhydrous coating dry method applicator device for an embodiment of the present invention.
Fig. 2 is used for the structural representation of paper pulp fiber molded article surface anhydrous coating dry method applicator device for an embodiment of the present invention.
The specific embodiment
Purpose of the present invention, technical scheme and beneficial effect the present invention is further described below in conjunction with the drawings and specific embodiments for better illustrating.
The present invention is a kind of for paper pulp fiber product surface anhydrous coating dry method applicator device, as shown in Figure 1, comprise the coatings tank 10 that anhydrous coating is housed, the electrostatic spraying device 30 that is provided with nozzle 32, be used for transmitting the delivery unit of paper or cardboard, to the hot-press solidifying make-up machine 40 of the paper after the electrostatic spraying or cardboard hot-press solidifying.
Be provided with airless spraying equipment 20 between described coatings tank 10 and the electrostatic spraying device 30, described airless spraying equipment 20 is to utilize high pressure with the anhydrous coating fluidisation, make anhydrous coating be vaporific or graininess, described airless spraying equipment 20 is connected with the nozzle 32 of described electrostatic spraying device 30, and described nozzle 32 is used for described vaporific or granular anhydrous coating is being ejected into paper or the cardboard that is positioned at described electrostatic spraying device 30 greater than 0 degree less than the angular range of 90 degree and in greater than the range of flow of 0ml/s less than 100ml/s; Described electrostatic spraying device 30 is equivalent to charged of cavity, and described nozzle 32 surfaces are electronegative, and the chamber wall ground connection of electrostatic spraying device 30, thereby constitute an electrostatic field.
Described delivery unit comprises smooth roller 62, deflector roll 64 and corrector roll 66, be provided with freezing curing system 60 before the smooth roller of described gear unit, described smooth roller 62 is located at the front of described electrostatic spraying device 30, described deflector roll 64 is located between described electrostatic spraying device 30 and the described hot-press solidifying make-up machine 40, and described corrector roll 66 is located at described hot-press solidifying make-up machine 40 back; Be connected with freezing liquid in the described freezing curing system 60, commonly used is liquid nitrogen, paper pulp fiber goods before described freezing curing system 60 utilizes freezing liquid to electrostatic spraying carry out freezing curing, and the freezing processing time is generally 3h, so that the paper pulp fiber product surface is easy to set and the homogenising of coating; Preferably, be provided with interlayer in the described freezing curing system 60, in order to feed freezing liquid, can regulate cryogenic temperature simultaneously, described smooth roller 62 is used for the paper after the freezing sclerosis or cardboard extruding smooth, is convenient to follow-up electrostatic spraying; Described smooth roller 62, deflector roll 64 and corrector roll 66 constitute the conveyer belt of paper or cardboard, and the two ends of conveyer belt are respectively equipped with moves back paper roll 70 and coil paper 80, is used for moving back paper or coil paper.
The fabric width of described paper or cardboard is generally 787mm-10000mm, and the transfer rate of described delivery unit is generally 50-1500m/min.During use, after process electrostatic spraying device 30 applied, the amount of anhydrous coating was generally 25-180g/m on the paper
2, the amount of anhydrous coating is generally at 200 g/m on the cardboard
2, the quantity for spray of unit are on the anhydrous coating flow-control paper of speed that can be by regulating described delivery unit, nozzle 32 quantity of electrostatic spraying device 30, electrostatic spraying device 30 sprayings or the cardboard.
Described hot-press solidifying make-up machine 40 is to be made of two chargers up and down, on have two relative hot pressing rollers (42,44), middle formation pressure area, heat simultaneously, the solidification temperature in hot pressing district is that 100-200 ℃, pressure are 10KN/m-800 KN/m, the hot-press solidifying time is the 20-50 millisecond, to described paper or cardboard is cured and ornamenting.
Described anhydrous coating comprises by freeze-drying, spray drying process and the coating that prepared under the CO 2 supercritical condition by gluing monomer, pigment.Pigment, polymerization single polymerization monomer, initator, cosolvent, poly-stabilizing agent are added in the autoclave, are reaction dissolvent with the supercritical carbon dioxide, and pigment is grinding calcium carbonate, and particle diameter is 1200 orders; Cross-linking monomer is butyl methacrylate, and consumption is 10% of pigment weight; Initator is azodiisobutyronitrile etc., and addition is 0.5% of pigment weight; Cosolvent adopts the dimethyl silicone polymer 2-pyrrolidone-5-carboxylic acid, and its addition is 0.3% of pigment weight; Adopting the addition polymers Pluronic L62 polyethers of polypropylene glycol and oxirane is stabilizing agent, and consumption is 10% of pigment weight.Under 150 ℃, 50MPa condition, to react 18 hours, after reaction finished, carbon dioxide was emitted in decompression, and the product that obtains is dry in 105 ℃ baking oven, namely gets anhydrous coating.During use, need and will send into coatings tank after the anhydrous coating grinding, the anhydrous coating after the grinding reaches more than 80% less than the particle of 3um, and then through airless spraying equipment, in gun slot acceleration and electronegative, be sprayed onto paper surface, utilize effect of electric field, coating is deposited to the surface of paper.
Can be set up in parallel two covers as required or overlap coatings tank 10 and airless spraying equipment 20 more, and at the two or more nozzles 32 of having of electrostatic spraying device 30, can be paper or cardboard double-face spray painting anhydrous coating like this.
The present invention is a kind of for moulded paper pulp product surface anhydrous coating dry method applicator device, as shown in Figure 2, comprise the coatings tank 10 that anhydrous coating is housed, the electrostatic spraying device 30 that is provided with nozzle, be used for transmitting the delivery unit of moulded paper pulp product, to the extruding of the moulding article after the electrostatic spraying, smooth hot pressing gloss molding device 50.
Be provided with airless spraying equipment 20 between described coatings tank 10 and the electrostatic spraying device 30, send in the coatings tank 10 behind the described anhydrous coating freeze grinding, then through being pumped into airless spraying equipment 20; Described airless spraying equipment 20 is to utilize high pressure with the anhydrous coating fluidisation, make anhydrous coating be vaporific or graininess, described airless spraying equipment 20 is connected with the nozzle 32 of described electrostatic spraying device 30, and described nozzle 32 is used for described vaporific or granular anhydrous coating is being ejected into the moulded paper pulp product that is positioned at described electrostatic spraying device 30 greater than 0 degree less than the angular range of 90 degree and in greater than the range of flow of 0ml/s less than 100ml/s; Described electrostatic spraying device 30 is equivalent to charged of cavity, and described nozzle 32 surfaces are electronegative, and the chamber wall ground connection of electrostatic spraying device 30, thereby constituting an electrostatic field, the electrostatic spraying field voltage is 500-5000kV.
Described delivery unit comprises successively transfer roller 61 that head and the tail connect, driven roller 63, later roller 65, idler roller 67, corrector roll 66 and deflector roll 64, described transfer roller 61, driven roller 63, later roller 65, idler roller 67, corrector roll 66, deflector roll 64 constitute the circulating conveyer belt of a sealing, and described electrostatic spraying device 30 and described hot pressing gloss molding device 50 are located between described transfer roller 61 and the described driven roller 63.Described transfer roller 61 is conveyed into electrostatic spraying device 30 with moulded paper pulp product, and the moulded paper pulp product after the electrostatic spraying carries out mold pressing in hot pressing gloss molding device 50, and moulded paper pulp product after the mold pressing is through driven roller 63, automatic part picking or manually take part; The whole piece conveyer belt is through turning one's head roller 65 returns, and described idler roller 67 is used for adjusting the degree of tightness of conveyer belt, and described corrector roll 66 is used for preventing from the conveyer belt sideslip from passing through deflector roll 64 then, and enters next samsara through transfer roller 61.In the practice, the transfer rate of described conveyer belt is generally 50-900m/min, and that can adjust as required is greater or lesser.
Be respectively equipped with punch 52 and die 54 up and down in the described hot pressing gloss molding device 50, moulded paper pulp product after the electrostatic spraying is transmitted band and is transported in the hot pressing gloss molding device 50, moulded paper pulp product carries out mold pressing between the punch 52 of hot pressing gloss molding device 50 and die 54, the pressure in hot pressing gloss district is 100 ~ 3000 KN/m, and it is individual that the weight of moulded paper pulp product is generally 10g/-500g/.Can replace with the shape of lower punch 52 and die 54 according to the shape of moulded paper pulp product, to adapt to the needs of moulded paper pulp product, make the scope of application of this device wider.
Described anhydrous coating comprises by conventional wet coating and grinds the coating of preparation through liquid-nitrogen freeze drying, and the coating that is prepared under the CO 2 supercritical condition by gluing monomer, pigment.Pigment, polymerization single polymerization monomer, initator, cosolvent, poly-stabilizing agent are added in the autoclave, are reaction dissolvent with the supercritical carbon dioxide, and pigment is grinding calcium carbonate, and particle diameter is 1200 orders; Cross-linking monomer is butyl methacrylate, and consumption is 10% of pigment weight; Initator is azodiisobutyronitrile etc., and addition is 0.5% of pigment weight; Cosolvent adopts the dimethyl silicone polymer 2-pyrrolidone-5-carboxylic acid, and its addition is 0.3% of pigment weight; Adopting the addition polymers Pluronic L62 polyethers of polypropylene glycol and oxirane is stabilizing agent, and consumption is 10% of pigment weight.Under 150 ℃, 50MPa condition, to react 18 hours, after reaction finished, carbon dioxide was emitted in decompression, and the product that obtains is dry in 105 ℃ baking oven, namely gets anhydrous coating.During use, need and will send into coatings tank after the anhydrous coating grinding, the anhydrous coating after the grinding reaches more than 80% less than the particle of 3um, and then through airless spraying equipment, in gun slot acceleration and electronegative, be sprayed onto paper surface, utilize effect of electric field, coating is deposited to the surface of paper.
Embodiment 1
Paper surface anhydrous coating dry method method of application
The fabric width of paper is 787mm, adopt device shown in Figure 1, paper one end is fixed on shown in Figure 1 moving back on the paper roll 70, the other end is fixed on the paper roll 80, with the anhydrous coating of all packing in two coatings tanks 10, this device arranges two coatings tanks 10 and is connected with two airless spraying equipment 20 respectively, and airless spraying equipment 20 is connected with two nozzles 32 by pipeline, two nozzles 32 lay respectively at the upper and lower sides of electrostatic spraying device 30, can realize the double-face spray painting to paper; Delivery unit is by smooth roller 62, deflector roll 64 and corrector roll 66 are realized the transmission of paper, the transfer rate of delivery unit is 50m/min, the paper that moves back on the paper roll 70 is sent to freezing cure process device 60 through delivery unit, the freezing processing time is 3h, the freezing processing temperature is below-6 ℃, paper after freezing through smooth roller 62 push smooth after, enter the cavity of electrostatic spraying device 30, the electrostatic field electric load of regulating electrostatic spraying device 30 is 500-5000kV, anhydrous coating is spent angles through nozzle 32 with 5, flow is that the condition of 5ml/s sprays the paper in the electrostatic spraying device 30, and the quantity for spray of paper surface anhydrous coating is 25g/m
2Paper after the spraying is sent to hot-press solidifying make-up machine 40 by delivery unit from electrostatic spraying device 30, carry out 20 milliseconds of hot-press solidifying moulding, described hot-press solidifying make-up machine 40 is provided with two hot rubber hot pressing rollers (42,44) up and down, paper is solidified and ornamenting between two hot rubber hot pressing rollers (42,44), and the hot-press solidifying temperature is that 200 ℃, pressure are 10KN/m.
Embodiment 2
Paper surface anhydrous coating dry method method of application
The fabric width of paper is 10000mm, adopt device shown in Figure 1, paper one end is fixed on shown in Figure 1 moving back on the paper roll 70, the other end is fixed on the paper roll 80, with the anhydrous coating of all packing in two coatings tanks 10, this device arranges two coatings tanks 10 and is connected with two airless spraying equipment 20 respectively, and airless spraying equipment 20 is connected with two nozzles 32 by pipeline, two nozzles 32 lay respectively at the upper and lower sides of electrostatic spraying device 30, can realize the double-face spray painting to paper; Delivery unit is by smooth roller 62, deflector roll 64 and corrector roll 66 are realized the transmission of paper, the transfer rate of delivery unit is 1500m/min, the paper that moves back on the paper roll 70 is sent to freezing cure process device 60 through delivery unit, the freezing processing time is 3h, the freezing processing temperature is below-6 ℃, paper after freezing through smooth roller 62 push smooth after, enter the cavity of electrostatic spraying device 30, the electrostatic field electric load of regulating electrostatic spraying device 30 is 5000kV, anhydrous coating is spent angles through nozzle 32 with 50, flow is that the condition of 100ml/s sprays the paper in the electrostatic spraying device 30, and the quantity for spray of paper surface anhydrous coating is 180g/m
2Paper after the spraying is sent to hot-press solidifying make-up machine 40 by delivery unit from electrostatic spraying device 30, carry out 50 milliseconds of hot-press solidifying moulding, described hot-press solidifying make-up machine 40 is provided with two hot rubber hot pressing rollers (42,44) up and down, paper is solidified and ornamenting between two hot rubber hot pressing rollers (42,44), and the hot-press solidifying temperature is that 200 ℃, pressure are 800 KN/m.
Embodiment 3
Paperboard surface anhydrous coating dry method method of application
The fabric width of cardboard is 6000mm, adopt device shown in Figure 1, cardboard one end is fixed on shown in Figure 1 moving back on the paper roll 70, the other end is fixed on the paper roll 80, with the anhydrous coating of all packing in two coatings tanks 10, this device arranges two coatings tanks 10 and is connected with two airless spraying equipment 20 respectively, and airless spraying equipment 20 is connected with two nozzles 32 by pipeline, two nozzles 32 lay respectively at the upper and lower sides of electrostatic spraying device 30, can realize the double-face spray painting to paper; Delivery unit is by smooth roller 62, deflector roll 64 and corrector roll 66 are realized the transmission of paper, the transfer rate of delivery unit is 750m/min, the cardboard that moves back on the paper roll 70 is sent to freezing cure process device 60 through delivery unit, the freezing processing time is 3h, the freezing processing temperature is below-6 ℃, cardboard after freezing through smooth roller 62 push smooth after, enter the cavity of electrostatic spraying device 30, the electrostatic field electric load of regulating electrostatic spraying device 30 is 3000kV, anhydrous coating is spent angles through nozzle 32 with 75, flow is that the condition of 50ml/s sprays the cardboard in the electrostatic spraying device 30, and the quantity for spray of paperboard surface anhydrous coating is 210g/m
2Cardboard after the spraying is sent to hot-press solidifying make-up machine 40 by delivery unit from electrostatic spraying device 30, carry out 30 milliseconds of hot-press solidifying moulding, described hot-press solidifying make-up machine 40 is provided with two hot rubber hot pressing rollers (42,44) up and down, cardboard is solidified and ornamenting between two hot rubber hot pressing rollers (42,44), and the hot-press solidifying temperature is that 150 ℃, pressure are 500 KN/m.
Embodiment 4
Disposable paper panel surface anhydrous coating dry method method of application
The weight of disposable paper disc is 10g/, adopts device shown in Figure 2.According to the shape of disposable paper disc, change punch 52 and die 54 in the hot pressing gloss molding device 50, the shape of punch 52 and die 54 is matched with the shape of disposable paper disc.With the anhydrous coating of packing in the coatings tank 10, disposable lunch box is put near transfer roller 61 sides, send into electrostatic spraying device 30 by conveyer belt, the transfer rate of conveyer belt is 50m/min, the voltage of electrostatic spraying field is 500kV, anhydrous coating is spent angles through nozzle 32 with 75, flow is that the condition of 5ml/s sprays the disposable paper disc in the electrostatic spraying device 30, disposable paper disc after the spraying is sent in the hot pressing gloss molding device 50 through delivery unit, the mold pressing district is by up and down two punch that match 52 and die 54 are formed, the molded curing moulding between punch 52 and die 54 of disposable paper disc, pressure is 100KN/m in the hot pressing gloss molding device 50, and the disposable paper disc after the mold pressing is through driven roller 63 automatic part pickings or manually by part.Conveyer belt is through turning one's head roller 65 returns, and idler roller 67 can be adjusted the elasticity of conveyer belt, and corrector roll 66 can prevent the conveyer belt sideslip, passes through deflector roll 64 then, and enters next samsara through transfer roller 61, transmits new disposable paper disc and repeats said process.
Embodiment 5
Disposable lunch box surface anhydrous coating dry method method of application
The weight of disposable lunch box is 25g/, adopts device shown in Figure 2.According to the shape of disposable lunch box, change punch 52 and die 54 in the hot pressing gloss molding device 50, the shape of punch 52 and die 54 is matched with the shape of disposable lunch box.With the anhydrous coating of packing in the coatings tank 10, disposable lunch box is put near transfer roller 61 sides, send into electrostatic spraying device 30 by conveyer belt, the transfer rate of conveyer belt is 500m/min, the voltage of electrostatic spraying field is 2000kV, anhydrous coating is spent angles through nozzle 32 with 5, flow is that the condition of 60ml/s sprays the disposable lunch box in the electrostatic spraying device 30, disposable lunch box after the spraying is sent in the hot pressing gloss molding device 50 through delivery unit, the mold pressing district is by up and down two punch that match 52 and die 54 are formed, disposable lunch box molded curing moulding between punch 52 and die 54, pressure is 1500KN/m in the hot pressing gloss molding device 50, and the disposable lunch box after the mold pressing is through driven roller 63 automatic part pickings or manually by part.Conveyer belt is through turning one's head roller 65 returns, and idler roller 67 can be adjusted the elasticity of conveyer belt, and corrector roll 66 can prevent the conveyer belt sideslip, passes through deflector roll 64 then, and enters next samsara through transfer roller 61, transmits new disposable lunch box and repeats said process.
Embodiment 6
Glassware buffer pallet surface anhydrous coating dry method method of application
The weight of glassware buffer pallet is 500g/, adopts device shown in Figure 2.According to the shape of glassware buffer pallet, change punch 52 and die 54 in the hot pressing gloss molding device 50, the shape of punch 52 and die 54 is matched with the shape of glassware buffer pallet.With the anhydrous coating of packing in the coatings tank 10, the glassware buffer pallet is put near transfer roller 61 sides, send into electrostatic spraying device 30 by conveyer belt, the transfer rate of conveyer belt is 900m/min, the voltage of electrostatic spraying field is 5000kV, anhydrous coating is spent angles through nozzle 32 with 20, flow is that the condition of 100ml/s sprays the glassware buffer pallet in the electrostatic spraying device 30, glassware buffer pallet after the spraying is sent in the hot pressing gloss molding device 50 through delivery unit, the mold pressing district is by up and down two match punch 52 and dies 54 are formed, the molded curing moulding between punch 52 and die 54 of glassware buffer pallet, pressure is 5000KN/m in the hot pressing gloss molding device 50, and the glassware buffer pallet after the mold pressing is through driven roller 63 automatic part pickings or manually by part.Conveyer belt is through turning one's head roller 65 returns, and idler roller 67 can be adjusted the elasticity of conveyer belt, and corrector roll 66 can prevent the conveyer belt sideslip, passes through deflector roll 64 then, and enters next samsara through transfer roller 61, transmits new glassware buffer pallet and repeats said process.
The above only is preferred embodiment of the present invention but not limiting the scope of the invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention; can make amendment or be equal to replacement technical solution of the present invention, these modifications or be equal to replacement and also should be considered as protection scope of the present invention.
Claims (3)
1. method of utilizing the dry method applicator device that paper pulp fiber product surface anhydrous coating dry method is applied, described paper pulp fiber goods are moulded paper pulp product, it is characterized in that, described dry method applicator device comprises:
Hold the coatings tank of anhydrous coating;
Be provided with the electrostatic spraying device of nozzle;
The airless spraying equipment that connects described coatings tank and described electrostatic spraying device nozzle;
Transmit the delivery unit of paper pulp fiber goods;
To applying the post-processing unit that back paper pulp fiber product dried is solidified;
Described delivery unit comprises that described electrostatic spraying device and described post-processing unit are located between the transfer roller and driven roller of described delivery unit by transfer roller, driven roller, roller, idler roller, corrector roll and the deflector roll closed conveyer belt that connects and composes of head and the tail successively later;
Described post-processing unit is hot pressing gloss molding device, is provided with punch and the die that cooperatively interacts in the described hot pressing gloss molding device;
Described method comprises:
Electrostatic spraying, with paper pulp fiber goods electrostatic spraying anhydrous coating in electrostatic spraying device, electric field pressure is 500KV-2000KV in the described electrostatic spraying device;
Hot-press solidifying, with the hot-forming and curing in described hot pressing gloss molding device of the paper pulp fiber goods after the electrostatic spraying, described hot-press solidifying pressure is 100KN/m-3000KN/m.
2. the dry method applicator device that utilizes as claimed in claim 1 is to the method that paper pulp fiber product surface anhydrous coating dry method applies, and it is characterized in that described anhydrous coating comprises by freeze-drying, spray drying process and the anhydrous coating that prepared under the CO 2 supercritical condition by gluing monomer, pigment.
3. the method for utilizing the dry method applicator device that paper pulp fiber product surface anhydrous coating dry method is applied as claimed in claim 2, it is characterized in that described anhydrous coating is prepared under the CO 2 supercritical condition by gluing monomer, pigment, described gluing monomer comprises methyl methacrylate, butyl acrylate, styrene organic gel allonge body; Described pigment comprises grinding calcium carbonate, winnofil, nano-calcium carbonate, kaolin inorganic pigment.
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| CN 201110198030 CN102242528B (en) | 2011-07-15 | 2011-07-15 | Method and device for coating anhydrous coatings on pulp fiber product surface by using dry process |
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| CN 201110198030 CN102242528B (en) | 2011-07-15 | 2011-07-15 | Method and device for coating anhydrous coatings on pulp fiber product surface by using dry process |
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| CN102242528A CN102242528A (en) | 2011-11-16 |
| CN102242528B true CN102242528B (en) | 2013-07-17 |
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| CN104594126A (en) * | 2015-01-14 | 2015-05-06 | 深圳市美盈森环保科技股份有限公司 | Process method for baking and molding surface of paperboard |
| CN105925094A (en) * | 2016-04-24 | 2016-09-07 | 龙泉市嘉文木业有限公司 | Wood or paper-based packing box integrated spraying manufacture method |
| CN107724178A (en) * | 2017-09-28 | 2018-02-23 | 佛山汇众森泰科技有限公司 | It is a kind of can high yield environmental protection packaging material for food processing unit (plant) and preparation method |
| CN109972459A (en) * | 2017-12-27 | 2019-07-05 | 金箭印刷事业有限公司 | The manufacturing method of paper-plastic products |
| CN108816673A (en) * | 2018-07-04 | 2018-11-16 | 东莞市凯迪胶粘科技有限公司 | It is a kind of to increase freezing section to improve the hot melt coating machine of coating homogeneity |
| CN110525074A (en) * | 2019-10-08 | 2019-12-03 | 美盈森集团股份有限公司 | A kind of printing technology of moulded paper pulp product |
| CN111501407A (en) * | 2020-04-24 | 2020-08-07 | 宁波天予日用品有限公司 | Preparation equipment and preparation process of aluminum-foil paper antibacterial coating |
| CN111774225B (en) * | 2020-06-11 | 2021-11-09 | 安徽今溪大麦互联网技术服务有限公司 | Anticorrosive spraying device of automobile sealing strip |
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| CN1268923A (en) * | 1998-03-12 | 2000-10-04 | 坂东化学株式会社 | Sheet having powder coated thereon, and prodn. and use thereof |
| CN1246405C (en) * | 2001-03-30 | 2006-03-22 | 罗姆和哈斯公司 | Improved coating and coating composition |
| US6737163B2 (en) * | 2002-05-31 | 2004-05-18 | Ppg Industries Ohio, Inc. | Low-cure powder coatings and methods for using the same |
| DE602005007419D1 (en) * | 2004-05-07 | 2008-07-24 | Rohm & Haas | ROHMIX POWDER COMPOSITIONS AND METHOD FOR THE PRODUCTION THEREOF |
| CN102030850B (en) * | 2010-10-29 | 2012-05-09 | 华南理工大学 | Method for preparing environmentally-friendly anhydrous phase paper coating |
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