Corrugated board and corrugated carton production process
Technical Field
The application relates to the technical field of packaging materials, in particular to a corrugated board and a corrugated carton production process.
Background
The paper packaging industry is one of the most rapidly developing fields in the packaging industry, has a large development space, and corrugated boards are considered to be one of the most promising green packaging materials. Corrugated boxes are paper container packages made of corrugated cardboard and widely used for transport packaging. For over a hundred years, corrugated containers have become the primary packaging form for shipping packaging, the most widely used packaging material worldwide.
The corrugated board is a multi-layer adhesive body, at least consists of a layer of wavy core paper interlayer (commonly known as 'hole paper', 'corrugated core paper', 'corrugated paper core', 'corrugated raw paper') and a layer of paper board (also known as 'box board paper', 'box paper board'), has high mechanical strength, and can resist collision and falling in the process of carrying.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: when dangerous products such as inflammable products, explosive products and the like are transported, the flame retardant property of the related corrugated boards is poor, the application of corrugated cases in some special scenes is limited, and the corrugated boards need to be subjected to flame retardant treatment to meet the fire safety standard when the functional paper packages with the fireproof and flame retardant requirements are packaged.
Disclosure of Invention
In order to improve the fire resistance of the corrugated board, reach the fire safety standard and expand the application range of the corrugated board, the application provides the corrugated board and the corrugated carton production process.
The application provides a corrugated container board and corrugated carton production technology adopts following technical scheme: the utility model provides a corrugated container board, including flute core paper and two-layer outer cardboard, flute core paper is located between the two-layer outer cardboard and with outer cardboard rigid coupling, flute core paper is run through the hose that has the bendable, a plurality of apopores have been seted up to the hose, the splendid attire has the fire extinguishing fluid in the hose, the outer wall rigid coupling of hose has the easily layer of melting, it has fine sand to fill between the two-layer outer cardboard, it has the fire-retardant glue that bonds fine sand as an organic whole to fill between the fine sand, be equipped with the bending assembly that the multiunit interval set up between the outer cardboard of both sides, flute core paper runs through bending assembly, bending assembly includes two flexible connecting plates and many springs, two connecting plates all with the inboard rigid coupling of two-layer outer cardboard, many springs are located between the two connecting plates and with two connecting plate fixed connection, the equal rigid coupling of.
By adopting the technical scheme, the flame retardant property of the outer-layer paper board can be effectively improved by the expandable graphite composite flame retardant layer, fine sand is bonded into a whole by the flame retardant glue, the flame retardant property of the corrugated paper board is further improved, if a fire accident occurs, the easily-melted layer can be burnt by open fire after the outer-layer paper board is burnt out, the fire extinguishing liquid in the soft water pipe can be sprayed out through the water outlet holes to cool and extinguish the open fire, the flame retardant property of the corrugated paper board is effectively improved, and the risk that transported objects are burnt out is reduced; because the bending component comprises a plurality of springs, the bending component can be bent and deformed, so that the corrugated board can be bent, and the corrugated board can be conveniently bent at any bending component to manufacture the corrugated case.
Optionally, two side surfaces of the corrugated medium paper are fixedly connected with an EPE pearl cotton layer.
By adopting the technical scheme, the EPE pearl wool has low heat conductivity, and the heat insulation and flame retardant properties of the corrugated board are effectively improved; the EPE pearl cotton also has the advantages of good plasticity, strong toughness, shock resistance and strong impact resistance, and the EPE pearl cotton layer can share the impact force on the corrugated medium paper, so that the compression resistance of the corrugated board is improved.
Optionally, the hose is latticed, and the hose intercommunication has notes liquid mouth, and the port of annotating the liquid mouth can be dismantled and be connected with the sealing cap that is used for sealing notes liquid mouth port.
By adopting the technical scheme, the water hose is arranged in a grid shape, so that the volume proportion of the water hose in the corrugated board can be effectively increased, the contact area of the water hose and the corrugated board is increased, and the fire extinguishing capability of the water hose is improved; the opening of the sealing cap can fill the fire extinguishing liquid into the flexible water pipe through the liquid filling port, if the fire extinguishing liquid is excessively filled, the excessive fire extinguishing liquid can be sucked out through the liquid filling port, and the operation is flexible.
Optionally, the containing amount of the fire extinguishing liquid in the flexible water pipe accounts for 60% -95% of the total volume of the flexible water pipe, and the fire extinguishing liquid with a melting point of minus 60 degrees to minus 40 degrees is adopted.
By adopting the technical scheme, the fire extinguishing liquid accounting for 60-95% of the total volume of the flexible water pipe is filled into the flexible water pipe, so that the weight of the corrugated board can be reduced, and the fire extinguishing capability of the fire extinguishing liquid can be effectively ensured; in cold northern areas, the fire-extinguishing fluid with the melting point of minus 60 degrees to minus 40 degrees is adopted to prevent the fire-extinguishing fluid from freezing and losing fluidity, thereby ensuring the fire-extinguishing capability.
Optionally, the flexible water pipe is further communicated with an inflation inlet, a one-way air valve which can only inflate the interior of the flexible water pipe is fixedly arranged in the inflation inlet, and the flexible water pipe is filled with high-pressure inert gas.
Through adopting above-mentioned technical scheme, can fill into high-pressure inert gas in to the hose through one-way pneumatic valve, the atmospheric pressure in the hose increases, and when easily melting the layer and being burnt, high-pressure inert gas can in time extrude the fire extinguishing liquid from the hose, effectively improves the fire extinguishing effect of fire extinguishing liquid.
Optionally, the expandable graphite composite flame retardant layer is an expandable graphite composite flame retardant layer prepared by mixing EG, MH and na2sio3.9h2o according to a predetermined ratio.
By adopting the technical scheme, EG has the advantage of being not easy to frost, MH has the advantages of being non-toxic and non-corrosive, Na2SiO3.9H2O has good heat resistance and bonding strength, EG, MH and Na2SiO3.9H2O are mixed according to a preset proportion to prepare the expandable graphite composite flame retardant layer, the expandable graphite composite flame retardant layer can have the excellent performances of being non-toxic, heat-resistant and high in integrity, and the outer-layer paperboard is effectively protected.
Optionally, smoke abatement layers are further fixedly connected to two side faces of the corrugated medium paper.
By adopting the technical scheme, the smoke abatement layer is formed by coating the smoke abatement agent, when the corrugated board is burnt, the smoke abatement agent is heated and decomposed to release combined water, a large amount of latent heat is absorbed, the flame retardant effect is good, and simultaneously the steam emitted by the smoke abatement layer can well inhibit smoke and play a role in flame retardance.
Optionally, the outer side of the outer layer paperboard is fixedly connected with a drying agent layer.
By adopting the technical scheme, the drying agent layer can play a role in water and moisture prevention, the possibility that the expandable graphite composite flame retardant layer and the outer layer paperboard are corroded by moisture is reduced, and the flame retardance and the quality stability of the corrugated paperboard are indirectly improved.
Optionally, the corrugated carton production process includes the following steps:
s1, manufacturing a water hose: manufacturing a flexible water pipe according to a predetermined size;
s2, filling fire extinguishing liquid: filling a proper amount of fire extinguishing liquid into the soft water pipe through the liquid injection port;
s3, filling high-pressure inert gas: filling high-pressure inert gas into the soft water pipe through the one-way gas valve;
s4, preparing a bending component: manufacturing two connecting plates and a plurality of springs which form the bending assembly, and connecting the two connecting plates into a whole by using the springs;
s5, manufacturing corrugated boards: producing corrugated core paper and outer layer paper boards, prefabricating a water hose and a bending assembly into the two layers of outer layer paper boards, enabling the water hose to penetrate through the corrugated core paper, and fixedly connecting a connecting plate with the inner side surfaces of the two layers of outer layer paper boards;
s6, filling fine sand: stirring and mixing the fine sand and the flame-retardant glue, and filling the fine sand into a gap between two outer layers of paperboards before the flame-retardant glue is coagulated and molded;
s7, manufacturing the corrugated case: the corrugated paper board is folded according to the size of the packaged article to be made into a corrugated case.
By adopting the technical scheme, in the S1-S3, the soft water pipe is filled with the fire extinguishing liquid and the high-pressure inert gas, and when the corrugated board is ignited and burnt, the high-pressure inert gas and the fire extinguishing liquid can prevent open fire from continuing burning, so that the flame retardant property of the corrugated board is improved; s4, preparing a bending component, so that the corrugated board can be bent, and the corrugated board can be conveniently bent at any bending component to manufacture a corrugated case; s5, manufacturing the corrugated board, and effectively improving the flame retardance of the corrugated board embedded with the soft water pipe; s6, filling fine sand into the gap between the two outer layers of the paper boards, and further improving the flame retardant property of the corrugated paper board; and S7, the corrugated paper board is made into a corrugated paper box meeting the fire-fighting standard according to the size of the packaged article, and the corrugated paper box can effectively protect the article and improve the transportation safety in the process of transporting the article.
Optionally, in step S5, the manufactured outer cardboard is placed on an automatic coating machine, the height of a coating scraper is adjusted, the prepared expandable graphite composite flame retardant is coated on the front and back sides of the corrugated cardboard by a coating thickness of 0.1 mm, after the coating is completed, the corrugated cardboard is placed in a forced air drying oven at 50 ℃ for drying for a period of time, the dried corrugated cardboard is taken out, and the coating and drying steps are repeated for 1 time, so that the expandable graphite composite flame retardant is uniformly coated on the front and back sides of the corrugated cardboard.
By adopting the technical scheme, after the expandable graphite composite flame retardant is coated for the first time, the mutual bonding firmness of the expandable graphite composite flame retardant and the outer-layer paperboard can be improved by drying, and after the steps of coating and drying are repeated for 1 time, the thickness of the expandable graphite composite flame retardant layer can be increased, and the flame retardant property of the outer-layer paperboard is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging the expandable graphite composite flame retardant layer, the flame retardant property of the outer paperboard can be effectively improved by the expandable graphite composite flame retardant layer;
2. the fine sand is adhered into a whole by the flame-retardant glue, so that the flame-retardant property of the corrugated board is further improved;
3. through setting up the hose, after outer cardboard is burnt out, easily melt the layer and can be burnt out by the naked light afterwards, the fire extinguishing liquid in the hose can be cooled down to the naked light through a plurality of apopores blowout and put out a fire, effectively improves corrugated container board's fire behaviour, reduces the risk that transported substance article is burnt out.
Drawings
Fig. 1 is a schematic structural diagram of a corrugated cardboard according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the structure of a one-way air valve;
figure 3 is an exploded view of a folded assembly.
Description of reference numerals: 1. an outer layer of paperboard; 11. an expandable graphite composite flame retardant layer; 12. a desiccant layer; 2. corrugated medium paper; 21. EPE pearl cotton layer; 22. a smoke elimination layer; 3. a flexible water pipe; 31. a water outlet hole; 32. an easily meltable layer; 33. a liquid injection port; 34. sealing the cap; 35. an inflation inlet; 36. a one-way air valve; 4. fine sand; 5. a bending assembly; 51. a connecting plate; 52. a spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a corrugated board, refer to fig. 1 and 2, the corrugated board comprises corrugated core paper 2 and two layers of outer paper boards 1, the corrugated core paper 2 is wavy, the corrugated core paper 2 is positioned between the two layers of outer paper boards 1, wave crests and wave troughs of the corrugated core paper 2 are respectively fixedly connected with the two layers of outer paper boards 1, a bendable latticed water hose 3 is arranged between the two layers of outer paper boards 1, the water hose 3 penetrates through the corrugated core paper 2, a plurality of water outlets 31 distributed at equal intervals are formed in the circumferential side wall of the water hose 3, fire extinguishing liquid is contained in the water hose 3, and an easily-melting layer 32 is fixedly sleeved on the outer wall of the water hose 3; a plurality of groups of bending assemblies 5 which are distributed at equal intervals are arranged between the outer paper boards 1 on the two sides, and the corrugated medium paper 2 penetrates through the bending assemblies 5; fine sand 4 is filled between the two outer layer paperboards 1, and flame retardant glue for bonding the fine sand 4 into a whole is filled between the fine sand 4; the outer side surfaces of the two outer layer paperboards 1 are coated with expandable graphite composite flame retardant layers 11, and the outer side surfaces of the expandable graphite composite flame retardant layers 11 are fixedly connected with drying agent layers 12.
Referring to fig. 1 and 2, the desiccant layer 12 can play a role of waterproof and moistureproof, reduce the possibility that the expandable graphite composite flame retardant layer 11 and the outer layer paperboard 1 are corroded by moisture, and improve the flame retardance and the quality stability of the corrugated board; the expandable graphite composite flame retardant layer 11 can effectively improve the flame retardant property of the outer paperboard 1; the fine sand 4 is bonded into a whole by the flame-retardant adhesive, so that the flame retardant property of the corrugated board is further improved; if a fire accident occurs, after the outer-layer paper board 1 is burnt out, the easily-melted layer 32 is burnt out by open fire, and the fire extinguishing liquid in the flexible water pipe 3 is sprayed out through the water outlet holes 31 to cool and extinguish the open fire, so that the flame retardant property of the corrugated paper board is effectively improved, and the risk of burning out transported objects is reduced; the bending component 5 can be bent and deformed, so that the corrugated board can be bent, and the corrugated board can be conveniently bent at any bending component 5 to manufacture a corrugated case.
Referring to fig. 1 and 2, two sides of the corrugated medium 2 are fixedly connected with EPE pearl cotton layers 21, and two sides of the two EPE pearl cotton layers 21, which are away from each other, are fixedly connected with smoke elimination layers 22. The smoke elimination layer 22 is formed by coating the smoke elimination agent, when the corrugated board burns, the smoke elimination agent is heated and decomposed to release combined water, a large amount of latent heat is absorbed, the flame retardant effect is good, and meanwhile, the steam emitted by the smoke elimination layer can well inhibit smoke and play a role in flame retardance; the EPE pearl wool has low heat conductivity, and the heat insulation and flame retardant properties of the corrugated board are effectively improved; the EPE pearl wool also has the advantages of good plasticity, strong toughness, shock resistance and strong impact resistance, and the EPE pearl wool layer 21 can share the impact force on the corrugated medium paper 2, so that the compression resistance of the corrugated board is improved.
Referring to fig. 2 and 3, the bending assembly 5 includes two same flexible connecting plates 51 and a plurality of springs 52, the two connecting plates 51 are both fixedly connected with the inner sides of the two outer paper boards 1, the two connecting plates 51 are parallel to each other, the plurality of springs 52 are located between the two connecting plates 51, two ends of each spring 52 are respectively fixedly connected with the two connecting plates 51 to connect the two connecting plates 51 into a whole, and the corrugated core paper 2 penetrates through the two connecting plates 51 and is fixedly connected with the connecting plates 51. Because the bending component 5 comprises a plurality of springs 52 and a flexible connecting plate 51, the bending component 5 can be bent and deformed, so that the corrugated board can be bent, and the corrugated board can be conveniently bent at any bending component 5 to manufacture a corrugated carton.
Referring to fig. 1 and 2, the flexible water pipe 3 is communicated with a liquid injection port 33, a sealing cap 34 for sealing the port of the liquid injection port 33 is screwed on the port of the liquid injection port 33, the fire extinguishing liquid can be injected into the flexible water pipe 3 through the liquid injection port 33 by opening the sealing cap 34, if the fire extinguishing liquid is injected excessively, the excessive fire extinguishing liquid can be sucked out through the liquid injection port 33, and the operation is flexible; the flexible water pipe 3 is communicated with the inflation inlet 35, the one-way air valve 36 which can only inflate the flexible water pipe 3 is fixedly connected in the inflation inlet 35, the flexible water pipe 3 is filled with high-pressure inert gas, the high-pressure inert gas can be inflated into the flexible water pipe 3 through the one-way air valve 36, the air pressure in the flexible water pipe 3 is increased, when the easily-melted layer 32 is burnt, the high-pressure inert gas can timely extrude the fire extinguishing liquid out of the flexible water pipe 3, the fire extinguishing effect of the fire extinguishing liquid is effectively improved, meanwhile, the oxygen content of a fire area can be reduced through the high-pressure inert gas, and a fire source is rapidly extinguished.
Referring to fig. 1 and 2, the containing amount of the fire extinguishing liquid in the flexible water pipe 3 accounts for 60-95% of the total volume of the flexible water pipe 3, the melting point of the fire extinguishing liquid is minus 60-minus 40 degrees, and the fire extinguishing liquid accounting for 60-95% of the total volume of the flexible water pipe 3 is filled into the flexible water pipe 3, so that the weight of the corrugated board can be reduced, and the fire extinguishing capability of the fire extinguishing liquid can be effectively ensured; in cold northern areas, the fire-extinguishing fluid with the melting point of minus 60 degrees to minus 40 degrees is adopted to prevent the fire-extinguishing fluid from freezing and losing fluidity, thereby ensuring the fire-extinguishing capability.
Referring to fig. 1 and 2, the expandable graphite composite flame retardant layer 11 is formed by mixing EG, MH and na2sio3.9h2o according to a predetermined ratio, EG has the advantage of being not easy to frost, MH has the advantage of being non-toxic and non-corrosive, na2sio3.9h2o has good heat resistance and bonding strength, and the expandable graphite composite flame retardant layer 11 is formed by mixing EG, MH and na2sio3.9h2o according to a predetermined ratio, so that the expandable graphite composite flame retardant layer 11 has excellent performances of being non-toxic, heat-resistant and high-integrity, and the outer paperboard 1 is effectively protected.
The implementation principle of a corrugated board in the embodiment of the application is as follows:
the desiccant layer 12 can play a role in water and moisture prevention, reduce the possibility that the expandable graphite composite flame retardant layer 11 and the outer-layer paperboard 1 are corroded by moisture, and improve the flame retardance and the quality stability of the corrugated paperboard; the expandable graphite composite flame retardant layer 11 can effectively improve the flame retardant property of the outer paperboard 1; the fine sand 4 is bonded into a whole by the flame-retardant adhesive, so that the flame retardant property of the corrugated board is further improved; if a fire accident occurs, after the outer-layer paper board 1 is burnt out, the easily-melted layer 32 is burnt out by open fire, and the fire extinguishing liquid in the flexible water pipe 3 is sprayed out through the water outlet holes 31 to cool and extinguish the open fire, so that the flame retardant property of the corrugated paper board is effectively improved, and the risk of burning out transported objects is reduced; the bending component 5 can be bent and deformed, so that the corrugated board can be bent, and the corrugated board can be conveniently bent at any bending component 5 to manufacture a corrugated case.
The embodiment of the application also discloses a corrugated case production process using the corrugated board, which comprises the following steps:
s1, referring to fig. 1 and 2, manufacturing the water hose 3 according to a predetermined size, and bonding and fixing the meltable layer 32 and the water hose 3 as a whole using a special adhesive;
s2, referring to the figures 1 and 2, the soft water pipe 3 is filled with fire extinguishing liquid which accounts for 60 to 95 percent of the total volume of the soft water pipe 3 through the liquid injection port 33, and then the port of the liquid injection port 33 is sealed by a sealing cap 34;
s3, referring to fig. 1 and 2, filling high pressure inert gas into the flexible water pipe 3 through the one-way gas valve 36;
s4, referring to fig. 2 and 3, manufacturing two connecting plates 51 and a plurality of springs 52 that form the bending assembly 5, and connecting the two connecting plates 51 into a whole by using the springs 52, thereby completing the manufacturing of the bending assembly 5;
s5, referring to the figures 1 and 2, producing corrugated core paper 2 and outer layer paper board 1, making a water hose 3 penetrate through the corrugated core paper 2, making the corrugated core paper 2 penetrate through a bending component 5, making the water hose 3 and the bending component 5 be prefabricated into the corrugated core paper 2, using a special adhesive to bond and fix a connecting plate 51 and the inner side surfaces of the two layers of outer layer paper boards 1, using the special adhesive to bond and fix the corrugated core paper 2 and the two layers of outer layer paper boards 1, placing the manufactured corrugated board on an automatic coating machine, adjusting the height of a coating scraper, coating the prepared expandable graphite composite flame retardant on the front and back surfaces of the corrugated board by adopting a coating thickness of 0.1 mm, after coating, placing the corrugated board in a blowing drying box at 50 ℃ for drying for a period of time, taking out the dried corrugated board, repeating the steps of coating and drying for 1 time, so that the expandable graphite composite flame retardant is uniformly coated on the front and back surfaces of the corrugated board, then using a special binder to bond and fix the drying agent layer 12 and the expandable graphite composite flame retardant layer 11;
s6, referring to the figures 1 and 2, stirring and mixing the fine sand 4 and the flame retardant glue, filling the fine sand 4 into a gap between two outer layers of paper boards 1 before the flame retardant glue is coagulated and formed, and coagulating and forming the fine sand 4 in the corrugated paper board;
s7, referring to fig. 1 and 2, the corrugated cardboard is folded into a corrugated box using a bending machine or a die cutter according to the size of the packaged article.
The implementation principle of the corrugated carton production process using the corrugated board in the embodiment of the application is as follows:
s1, manufacturing a water hose: manufacturing the flexible water pipe 3 according to a predetermined size;
s2, filling fire extinguishing liquid: a proper amount of fire extinguishing liquid is filled into the flexible water pipe 3 through the liquid injection port 33;
s3, filling high-pressure inert gas: filling high-pressure inert gas into the flexible water pipe 3 through the one-way gas valve 36;
s4, preparing a bending component: manufacturing two connecting plates 51 and a plurality of springs 52 which form the bending component 5, and connecting the two connecting plates 51 into a whole by using the springs 52;
s5, manufacturing corrugated boards: producing corrugated core paper 2 and outer layer paper boards 1, prefabricating a water hose 3 and a bending assembly 5 into the two layers of outer layer paper boards 1, enabling the water hose 3 to penetrate through the corrugated core paper 2, and fixedly connecting a connecting plate 51 with the inner side surfaces of the two layers of outer layer paper boards 1;
s6, filling fine sand: stirring and mixing the fine sand 4 and the flame-retardant glue, and filling the fine sand 4 into a gap between the two outer layers of the paperboards 1 before the flame-retardant glue is coagulated and formed;
s7, manufacturing the corrugated case: the corrugated paper board is folded according to the size of the packaged article to be made into a corrugated case.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.