阅读说明：本技术 一种防水包装盒的生产工艺 (Production process of waterproof packaging box ) 是由 姚建伟 于 2020-12-08 设计创作，主要内容包括：本发明公开了一种防水包装盒的生产工艺,包括以下步骤,步骤一：包装单纸板的制备；步骤二：包装纸板的制备；步骤三：防水处理；步骤四：包装纸板的裁切、印刷；步骤五：包装盒成型。本发明高分子聚四氟乙烯树脂、松香甘油酯和硬脂酸与蜂蜡混合乳化后成膜型和耐水性较好,而且乳液的粒径比传统蜡乳液的粒径更细,而且聚四氟乙烯树脂与蜂蜡的相容性较差,在包装纸板表面形成防水膜后,蜂蜡能够从高分子膜中析出,加上被纸纤维挡住的蜡粒子浮于指表面纤维上,减少了包装纸板表面发粘的现象,避免包装纸板出现塌楞的现象,蜂蜡中加入二氧化钛能够有效提高包装纸板的耐热能力,使其在高温环境下不易融化。(The invention discloses a production process of a waterproof packaging box, which comprises the following steps: preparing a packaging single paperboard; step two: preparing a packaging paperboard; step three: waterproof treatment; step four: cutting and printing a packaging paperboard; step five: and (5) forming the packaging box. The high polymer polytetrafluoroethylene resin, the rosin glyceride, the stearic acid and the beeswax are mixed and emulsified to form a film, the water resistance is good, the particle size of the emulsion is smaller than that of the traditional wax emulsion, the compatibility of the polytetrafluoroethylene resin and the beeswax is poor, after a waterproof film is formed on the surface of a packaging paper board, the beeswax can be separated out from the high polymer film, and wax particles blocked by paper fibers float on fibers on the surface of the packaging paper board, so that the phenomenon of surface stickiness of the packaging paper board is reduced, the phenomenon of collapse of the packaging paper board is avoided, and the heat resistance of the packaging paper board can be effectively improved by adding titanium dioxide into the beeswax, so that the packaging paper board is not easy to melt in a high-temperature environment.)

1. The production process of the waterproof packaging box is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: preparation of packaging single paperboard

Cleaning, cutting and crushing the collected straws and broad-leaved tree leaves, putting the crushed powder into a pulping machine for crushing and pulping to obtain slurry, adding a reinforcing agent into the slurry, heating the slurry to 75-95 ℃, keeping for 6-10min after reaching the set temperature, cooling the heated slurry, then sending the cooled slurry into a packaging paper double-sided machine, and preparing a packaging single paperboard by using the packaging paper double-sided machine;

step two: preparation of packaging paperboard

The multilayer packaging single paper boards are bonded together by hot pressing with an adhesive, the hot pressing temperature is 55-65 ℃, the hot pressing pressure is 1-2MPa, and the multilayer packaging single paper boards with the thickness of 3-5mm and the quantitative of 1600-inch plus 3200g/m are obtained²The packaging board of (1);

step three: water repellent treatment

Uniformly coating the polymer wax emulsion on the surface of a packaging paperboard by using a spraying machine, wherein the dosage is 60-90g/m²Then, the packaging paper board sprayed with the polymer wax emulsion is led into a drying box for drying, the temperature in the drying box is 110-150 ℃, and the polymer wax emulsion is dried into a waterproof film to be attached to the outer side of the packaging paper board;

step four: cutting and printing of packaging paperboard

Cutting the packaging paperboard obtained in the third step according to a certain size, then printing, and adding an antiwear agent in the printing process;

step five: forming of packing boxes

And (3) slotting the cut and printed packaging paper board, and then nailing and bonding to obtain the waterproof packaging box.

2. The production process of the waterproof packaging box according to claim 1, characterized in that: and in the first step, the crushed powder of the straws and the leaves of the broad-leaved trees is screened by a 600-mesh screening net, and the screened powder is introduced into a pulping machine.

3. The production process of the waterproof packaging box according to claim 1, characterized in that: the adhesive in the second step is prepared by mixing the following components in parts by weight: 2-5 parts of 2,4, 6-tri (ethylene oxide-2-methoxy) -1,3, 5-triazine, 1-3 parts of benzoenenitrile, 0.5-1.5 parts of hyperbranched polysiloxane, 10-15 parts of vinyl epoxy resin, 7-12 parts of ethylene-vinyl acetate copolymer, 0.3-0.6 part of total amino beta cyclodextrin, 5-10 parts of water, 10-15 parts of filler and 0.1-0.3 part of initiator.

4. The production process of the waterproof packaging box according to claim 3, characterized in that: the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate and azodiisopropyl imidazoline hydrochloride, and the filler is one or more of silicon dioxide, talcum powder, aluminum oxide or calcium carbonate.

5. The production process of the waterproof packaging box according to claim 1, characterized in that: the polymer wax emulsion in the third step comprises the following components in parts by weight: 8-15 parts of polytetrafluoroethylene resin, 10-18 parts of beeswax, 5-10 parts of rosin glyceride, 1-2 parts of emulsifier, 0.5-1 part of stearic acid, 0.1-1 part of chitosan, 0.05-0.1 part of nano titanium dioxide and water.

6. The production process of the waterproof packaging box according to claim 5, characterized in that: the preparation method of the polymer wax emulsion comprises the following steps: heating beeswax to 80-100 ℃, melting, adding chitosan and nano titanium dioxide, uniformly stirring for later use, then uniformly mixing polytetrafluoroethylene resin, rosin glyceride, a hydrophobing agent and stearic acid, heating to 150-210 ℃, preserving heat for 5-6h, then adding a beeswax mixture, stirring for 5-10min, adding an emulsifier, stirring to an emulsified state, then slowly adding boiling water into a reaction container to enable the viscous emulsified liquid to form white emulsion, then cooling, and performing high-pressure homogenization by using a homogenizer when cooling to 70 ℃ to obtain the high-molecular wax emulsion.

7. The production process of the waterproof packaging box according to claim 5, characterized in that: the emulsifier in the high-molecular wax emulsion is fatty amide polyoxyethylene ether, the rosin glyceride is 138 glyceride, and the stearic acid is 1810 stearic acid.

8. The production process of the waterproof packaging box according to claim 6, characterized in that: the stirring speed of the beeswax mixture and the heated polytetrafluoroethylene resin mixture is 2000r/min, and the adding speed of the boiling water into the reaction vessel is 120-240 ml/min.

9. The production process of the waterproof packaging box according to claim 1, characterized in that: in the first step, the broad-leaved trees are banyans, and the mass ratio of the broad-leaved tree leaves to the straw powder is 2-3: 1.

10. The production process of the waterproof packaging box according to claim 1, characterized in that: the antiwear agent in the fourth step is an antiwear agent for MC-1708 carton printing.

Technical Field

The invention relates to the technical field of packaging box production, in particular to a production process of a waterproof packaging box.

Background

The packaging box is a box for packaging products, and comprises a paper box, an iron box, a wood box, a leather box and the like according to different materials. The paper box is the most common packaging box at present, and has the advantages of cheapest raw materials, convenient production and processing and low cost. However, at present, various crop wastes such as straw, wood chips and the like are recycled to prepare the environment-friendly packaging box, so that the environment is protected, and the economic benefit is high. The paper packaging box is an indispensable packaging container in production and life, and is widely applied to transportation and packaging in various industries such as food, household appliances, textile, food industry, daily chemicals and the like. With the increase of the consumption level of people, the demand of the carton is increased, and higher requirements are also put on the appearance effect and the functionality of the carton.

The paper packaging box has poor waterproof performance in the using process, so that the service life of the packaging box is greatly reduced, and particularly, the paper packaging box is easy to contact with water in occasions, such as short-time rainwater in the transportation process. In order to prevent the paper-packaged product from being damaged by water, people often coat water-emulsion waterproof paint on the outer side of the packaging box or stick waterproof kraft paper on the outer side of the packaging box to improve the waterproof performance of the paper-packaged product, then the water-emulsion waterproof paint easily causes the corrugated collapse or corrugated separation of the packaging box, inevitable gaps exist when the waterproof kraft paper is stuck, water seeps into the paper box from the gaps of the waterproof kraft paper, and the water is diffused through the capillary action of the paper box to still cause the strength of the paper box to be reduced.

Disclosure of Invention

The invention aims to provide a production process of a waterproof packaging box, which aims to solve the problems in the background technology.

In order to solve the technical problems, the invention provides the following technical scheme: a production process of a waterproof packaging box comprises the following steps:

the method comprises the following steps: preparation of packaging single paperboard

Cleaning, cutting and crushing the collected straws and broad-leaved tree leaves, putting the crushed powder into a pulping machine for crushing and pulping to obtain slurry, adding a reinforcing agent into the slurry, heating the slurry to 75-95 ℃, keeping for 6-10min after reaching the set temperature, cooling the heated slurry, then sending the cooled slurry into a packaging paper double-sided machine, and preparing a packaging single paperboard by using the packaging paper double-sided machine;

step two: preparation of packaging paperboard

The multilayer packaging single paper boards are bonded together by hot pressing with an adhesive, the hot pressing temperature is 55-65 ℃, the hot pressing pressure is 1-2MPa, and the multilayer packaging single paper boards with the thickness of 3-5mm and the quantitative of 1600-inch plus 3200g/m are obtained²The packaging board of (1);

step three: water repellent treatment

Uniformly coating the polymer wax emulsion on the surface of a packaging paperboard by using a spraying machine, wherein the dosage is 60-90g/m²Then, the packaging paper board sprayed with the polymer wax emulsion is led into a drying box for drying, the temperature in the drying box is 110-150 ℃, and the polymer wax emulsion is dried into a waterproof film to be attached to the outer side of the packaging paper board;

step four: cutting and printing of packaging paperboard

Cutting the packaging paperboard obtained in the third step according to a certain size, then printing, and adding an antiwear agent in the printing process;

step five: forming of packing boxes

And (3) slotting the cut and printed packaging paper board, and then nailing and bonding to obtain the waterproof packaging box.

In a preferred embodiment, in the first step, the crushed powder of the straws and the leaves of the broad-leaved trees is screened by a 600-mesh screening net, and the screened powder is introduced into a pulping machine.

In a preferred embodiment, the adhesive in the second step is prepared by mixing the following components in parts by weight: 2-5 parts of 2,4, 6-tri (ethylene oxide-2-methoxy) -1,3, 5-triazine, 1-3 parts of benzoenenitrile, 0.5-1.5 parts of hyperbranched polysiloxane, 10-15 parts of vinyl epoxy resin, 7-12 parts of ethylene-vinyl acetate copolymer, 0.3-0.6 part of total amino beta cyclodextrin, 5-10 parts of water, 10-15 parts of filler and 0.1-0.3 part of initiator.

In a preferred embodiment, the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, azodiisopropyl imidazoline hydrochloride, and the filler is one or more of silica, talc, alumina, or calcium carbonate.

In a preferred embodiment, the polymer wax emulsion in step three comprises the following components in parts by weight: 8-15 parts of polytetrafluoroethylene resin, 10-18 parts of beeswax, 5-10 parts of rosin glyceride, 1-2 parts of emulsifier, 0.5-1 part of stearic acid, 0.1-1 part of chitosan, 0.05-0.1 part of nano titanium dioxide and water.

In a preferred embodiment, the method for preparing the polymer wax emulsion comprises the following steps: heating beeswax to 80-100 ℃, melting, adding chitosan and nano titanium dioxide, uniformly stirring for later use, then uniformly mixing polytetrafluoroethylene resin, rosin glyceride, a hydrophobing agent and stearic acid, heating to 150-210 ℃, preserving heat for 5-6h, then adding a beeswax mixture, stirring for 5-10min, adding an emulsifier, stirring to an emulsified state, then slowly adding boiling water into a reaction container to enable the viscous emulsified liquid to form white emulsion, then cooling, and performing high-pressure homogenization by using a homogenizer when cooling to 70 ℃ to obtain the high-molecular wax emulsion.

In a preferred embodiment, the emulsifier in the polymer wax emulsion is fatty amide polyoxyethylene ether, the rosin glyceride is 138 glyceride, and the stearic acid is 1810 stearic acid.

In a preferred embodiment, the beeswax mixture and the heated polytetrafluoroethylene resin mixture are stirred at a rate of 2000r/min, and the boiling water is added to the reaction vessel at a rate of 120-240 ml/min.

In a preferred embodiment, the broad-leaved trees in the first step are banyans, and the mass ratio of the broad-leaved tree leaves to the straw powder is 2-3: 1.

In a preferred embodiment, the antiwear agent in the fourth step is an antiwear agent for MC-1708 carton printing.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention coats the surface of the packaging paper board with the polymer wax emulsion, the polymer wax emulsion comprises polytetrafluoroethylene resin, beeswax, rosin glyceride, emulsifier, stearic acid, chitosan and nano titanium dioxide, the polymer polytetrafluoroethylene resin, the rosin glyceride, the stearic acid and the beeswax are mixed and emulsified to form a film, the water resistance is good, the particle diameter of the emulsion is smaller than that of the traditional wax emulsion, the compatibility of the polytetrafluoroethylene resin and the beeswax is poor, after the waterproof film is formed on the surface of the packaging paper board, the beeswax can be separated out from the polymer film, and the wax particles blocked by the paper fiber float on the surface fiber, so the sticky phenomenon on the surface of the packaging paper board is reduced, the collapse phenomenon of the packaging paper board is avoided, the polytetrafluoroethylene resin and the rosin glyceride in the polymer wax emulsion are easy to be hydrolyzed by alkali, and the recycling of the packaging paper board is convenient, moreover, the titanium dioxide is added into the beeswax, so that the heat resistance of the packaging paperboard can be effectively improved, and the packaging paperboard is not easy to melt in a high-temperature environment;

2. the packaging paperboard is formed by hot-pressing a plurality of packaging single paperboards by using an adhesive, the thickness of the packaging paperboard can be determined according to the use requirements of people, and the adhesive is formed by mixing 2,4, 6-tri (ethylene oxide-2-methoxy) -1,3, 5-triazine, benzonitrile, hyperbranched polysiloxane, vinyl epoxy resin, ethylene-vinyl acetate copolymer, total amino beta-cyclodextrin, water, filler and an initiator, so that the packaging paperboard not only has a strong adhesive effect, but also has high strength and heat resistance.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by referring to specific examples, and it is obvious that the described examples are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the invention provides a production process of a waterproof packaging box, which comprises the following steps:

the method comprises the following steps: preparation of packaging single paperboard

Cleaning, cutting and crushing the collected straws and broad-leaved tree leaves, putting the crushed powder into a pulping machine for crushing and pulping to obtain slurry, adding a reinforcing agent into the slurry, heating the slurry to 85 ℃, keeping for 8min after the temperature reaches a set temperature, cooling the heated slurry, then sending the cooled slurry into a packaging paper double-sided machine, and preparing a packaging single paperboard by using the packaging paper double-sided machine;

step two: preparation of packaging paperboard

Hot-pressing and bonding the multi-layer packaging single paper boards together by using an adhesive, wherein the hot-pressing temperature is 60 ℃, the hot-pressing pressure is 1.5MPa, the thickness is 4mm, and the quantitative content is 1900g/m²The packaging board of (1);

step three: water repellent treatment

Uniformly coating the polymer wax emulsion on the surface of a packaging paperboard by using a spraying machine, wherein the dosage is 75g/m²Then, guiding the packaging paper board sprayed with the polymer wax emulsion into a drying box for drying, wherein the temperature in the drying box is 130 ℃, and drying the polymer wax emulsion into a waterproof film attached to the outer side of the packaging paper board;

step four: cutting and printing of packaging paperboard

Cutting the packaging paperboard obtained in the third step according to a certain size, then printing, and adding an antiwear agent in the printing process;

step five: forming of packing boxes

And (3) slotting the cut and printed packaging paper board, and then nailing and bonding to obtain the waterproof packaging box.

In a preferred embodiment, in the first step, the crushed powder of the straws and the leaves of the broad-leaved trees is screened by a 600-mesh screening net, and the screened powder is introduced into a pulping machine.

In a preferred embodiment, the adhesive in the second step is prepared by mixing the following components in parts by weight: 3.5 parts of 2,4, 6-tri (ethylene oxide-2-yl methoxyl) -1,3, 5-triazine, 2 parts of benzonenitrile, 1 part of hyperbranched polysiloxane, 12.5 parts of vinyl epoxy resin, 9.5 parts of ethylene-vinyl acetate copolymer, 0.45 part of total amino beta cyclodextrin, 7.5 parts of water, 12.5 parts of filler and 0.2 part of initiator.

In a preferred embodiment, the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, azodiisopropyl imidazoline hydrochloride, and the filler is one or more of silica, talc, alumina, or calcium carbonate.

In a preferred embodiment, the polymer wax emulsion in step three comprises the following components in parts by weight: 8 parts of polytetrafluoroethylene resin, 10 parts of beeswax, 5 parts of rosin glyceride, 1 part of emulsifier, 0.5 part of stearic acid, 0.1 part of chitosan, 0.05 part of nano titanium dioxide and water.

In a preferred embodiment, the method for preparing the polymer wax emulsion comprises the following steps: heating beeswax to 90 ℃, melting, adding chitosan and nano titanium dioxide, stirring uniformly for later use, then uniformly mixing polytetrafluoroethylene resin, rosin glyceride, a hydrophobing agent and stearic acid, heating to 180 ℃, preserving heat for 5.5 hours, then adding a beeswax mixture, stirring for 7.5min, adding an emulsifier, stirring to an emulsified state, then slowly adding boiling water into a reaction container to enable viscous emulsified liquid to form white emulsion, then cooling, and carrying out high-pressure homogenization by using a homogenizer when the temperature is 70 ℃ to obtain the high-molecular wax emulsion.

In a preferred embodiment, the emulsifier in the polymer wax emulsion is fatty amide polyoxyethylene ether, the rosin glyceride is 138 glyceride, and the stearic acid is 1810 stearic acid.

In a preferred embodiment, the beeswax mixture is mixed with the heated polytetrafluoroethylene resin mixture at a stirring rate of 2000r/min and the boiling water is added to the reaction vessel at a rate of 180 ml/min.

In a preferred embodiment, the broad-leaved trees in the first step are banyans, and the mass ratio of the broad-leaved tree leaves to the straw powder is 2.5: 1.

In a preferred embodiment, the antiwear agent in the fourth step is an antiwear agent for MC-1708 carton printing, and the antiwear agent is used for improving the surface smoothness of the water-based ink print and reducing the surface friction coefficient, so that the phenomenon of delamination is reduced when the water-based ink print is rubbed by external force.

Example 2:

a production process of a waterproof packaging box comprises the following steps:

the method comprises the following steps: preparation of packaging single paperboard

Cleaning, cutting and crushing the collected straws and broad-leaved tree leaves, putting the crushed powder into a pulping machine for crushing and pulping to obtain slurry, adding a reinforcing agent into the slurry, heating the slurry to 85 ℃, keeping for 8min after the temperature reaches a set temperature, cooling the heated slurry, then sending the cooled slurry into a packaging paper double-sided machine, and preparing a packaging single paperboard by using the packaging paper double-sided machine;

step two: preparation of packaging paperboard

Hot-pressing and bonding the multi-layer packaging single paper boards together by using an adhesive, wherein the hot-pressing temperature is 60 ℃, the hot-pressing pressure is 1.5MPa, the thickness is 4mm, and the quantitative content is 1900g/m²The packaging board of (1);

step three: water repellent treatment

Uniformly coating the polymer wax emulsion on the surface of a packaging paperboard by using a spraying machine, wherein the dosage is 75g/m²Then, guiding the packaging paper board sprayed with the polymer wax emulsion into a drying box for drying, wherein the temperature in the drying box is 130 ℃, and drying the polymer wax emulsion into a waterproof film attached to the outer side of the packaging paper board;

step four: cutting and printing of packaging paperboard

Cutting the packaging paperboard obtained in the third step according to a certain size, then printing, and adding an antiwear agent in the printing process;

step five: forming of packing boxes

And (3) slotting the cut and printed packaging paper board, and then nailing and bonding to obtain the waterproof packaging box.

In a preferred embodiment, in the first step, the crushed powder of the straws and the leaves of the broad-leaved trees is screened by a 600-mesh screening net, and the screened powder is introduced into a pulping machine.

In a preferred embodiment, the adhesive in the second step is prepared by mixing the following components in parts by weight: 3.5 parts of 2,4, 6-tri (ethylene oxide-2-yl methoxyl) -1,3, 5-triazine, 2 parts of benzonenitrile, 1 part of hyperbranched polysiloxane, 12.5 parts of vinyl epoxy resin, 9.5 parts of ethylene-vinyl acetate copolymer, 0.45 part of total amino beta cyclodextrin, 7.5 parts of water, 12.5 parts of filler and 0.2 part of initiator.

In a preferred embodiment, the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, azodiisopropyl imidazoline hydrochloride, and the filler is one or more of silica, talc, alumina, or calcium carbonate.

In a preferred embodiment, the polymer wax emulsion in step three comprises the following components in parts by weight: 11.5 parts of polytetrafluoroethylene resin, 14 parts of beeswax, 7.5 parts of rosin glyceride, 1.5 parts of emulsifier, 0.75 part of stearic acid, 0.5 part of chitosan, 0.08 part of nano titanium dioxide and water.

In a preferred embodiment, the method for preparing the polymer wax emulsion comprises the following steps: heating beeswax to 90 ℃, melting, adding chitosan and nano titanium dioxide, stirring uniformly for later use, then uniformly mixing polytetrafluoroethylene resin, rosin glyceride, a hydrophobing agent and stearic acid, heating to 180 ℃, preserving heat for 5.5 hours, then adding a beeswax mixture, stirring for 7.5min, adding an emulsifier, stirring to an emulsified state, then slowly adding boiling water into a reaction container to enable viscous emulsified liquid to form white emulsion, then cooling, and carrying out high-pressure homogenization by using a homogenizer when the temperature is 70 ℃ to obtain the high-molecular wax emulsion.

In a preferred embodiment, the emulsifier in the polymer wax emulsion is fatty amide polyoxyethylene ether, the rosin glyceride is 138 glyceride, and the stearic acid is 1810 stearic acid.

In a preferred embodiment, the beeswax mixture is mixed with the heated polytetrafluoroethylene resin mixture at a stirring rate of 2000r/min and the boiling water is added to the reaction vessel at a rate of 180 ml/min.

In a preferred embodiment, the broad-leaved trees in the first step are banyans, and the mass ratio of the broad-leaved tree leaves to the straw powder is 2.5: 1.

In a preferred embodiment, the antiwear agent in the fourth step is an antiwear agent for MC-1708 carton printing, and the antiwear agent is used for improving the surface smoothness of the water-based ink print and reducing the surface friction coefficient, so that the phenomenon of delamination is reduced when the water-based ink print is rubbed by external force.

Example 3:

a production process of a waterproof packaging box comprises the following steps:

the method comprises the following steps: preparation of packaging single paperboard

Cleaning, cutting and crushing the collected straws and broad-leaved tree leaves, putting the crushed powder into a pulping machine for crushing and pulping to obtain slurry, adding a reinforcing agent into the slurry, heating the slurry to 85 ℃, keeping for 8min after the temperature reaches a set temperature, cooling the heated slurry, then sending the cooled slurry into a packaging paper double-sided machine, and preparing a packaging single paperboard by using the packaging paper double-sided machine;

step two: preparation of packaging paperboard

Hot-pressing and bonding the multi-layer packaging single paper boards together by using an adhesive, wherein the hot-pressing temperature is 60 ℃, the hot-pressing pressure is 1.5MPa, the thickness is 4mm, and the quantitative content is 1900g/m²The packaging board of (1);

step three: water repellent treatment

Uniformly coating the polymer wax emulsion on the surface of a packaging paperboard by using a spraying machine, wherein the dosage is 75g/m²Then, guiding the packaging paper board sprayed with the polymer wax emulsion into a drying box for drying, wherein the temperature in the drying box is 130 ℃, and drying the polymer wax emulsion into a waterproof film attached to the outer side of the packaging paper board;

step four: cutting and printing of packaging paperboard

Cutting the packaging paperboard obtained in the third step according to a certain size, then printing, and adding an antiwear agent in the printing process;

step five: forming of packing boxes

And (3) slotting the cut and printed packaging paper board, and then nailing and bonding to obtain the waterproof packaging box.

In a preferred embodiment, in the first step, the crushed powder of the straws and the leaves of the broad-leaved trees is screened by a 600-mesh screening net, and the screened powder is introduced into a pulping machine.

In a preferred embodiment, the adhesive in the second step is prepared by mixing the following components in parts by weight: 3.5 parts of 2,4, 6-tri (ethylene oxide-2-yl methoxyl) -1,3, 5-triazine, 2 parts of benzonenitrile, 1 part of hyperbranched polysiloxane, 12.5 parts of vinyl epoxy resin, 9.5 parts of ethylene-vinyl acetate copolymer, 0.45 part of total amino beta cyclodextrin, 7.5 parts of water, 12.5 parts of filler and 0.2 part of initiator.

In a preferred embodiment, the initiator is one or more of potassium persulfate, sodium persulfate, ammonium persulfate, azodiisopropyl imidazoline hydrochloride, and the filler is one or more of silica, talc, alumina, or calcium carbonate.

In a preferred embodiment, the polymer wax emulsion in step three comprises the following components in parts by weight: 15 parts of polytetrafluoroethylene resin, 18 parts of beeswax, 10 parts of rosin glyceride, 2 parts of emulsifier, 1 part of stearic acid, 1 part of chitosan, 0.1 part of nano titanium dioxide and water.

In a preferred embodiment, the method for preparing the polymer wax emulsion comprises the following steps: heating beeswax to 90 ℃, melting, adding chitosan and nano titanium dioxide, stirring uniformly for later use, then uniformly mixing polytetrafluoroethylene resin, rosin glyceride, a hydrophobing agent and stearic acid, heating to 180 ℃, preserving heat for 5.5 hours, then adding a beeswax mixture, stirring for 7.5min, adding an emulsifier, stirring to an emulsified state, then slowly adding boiling water into a reaction container to enable viscous emulsified liquid to form white emulsion, then cooling, and carrying out high-pressure homogenization by using a homogenizer when the temperature is 70 ℃ to obtain the high-molecular wax emulsion.

In a preferred embodiment, the emulsifier in the polymer wax emulsion is fatty amide polyoxyethylene ether, the rosin glyceride is 138 glyceride, and the stearic acid is 1810 stearic acid.

In a preferred embodiment, the beeswax mixture is mixed with the heated polytetrafluoroethylene resin mixture at a stirring rate of 2000r/min and the boiling water is added to the reaction vessel at a rate of 180 ml/min.

In a preferred embodiment, the broad-leaved trees in the first step are banyans, and the mass ratio of the broad-leaved tree leaves to the straw powder is 2.5: 1.

In a preferred embodiment, the antiwear agent in the fourth step is an antiwear agent for MC-1708 carton printing, and the antiwear agent is used for improving the surface smoothness of the water-based ink print and reducing the surface friction coefficient, so that the phenomenon of delamination is reduced when the water-based ink print is rubbed by external force.

Example 4:

different from the example 2, the macromolecular wax emulsion is evenly coated on the surface of the packaging paper board by a spraying machine, and the dosage is 60g/m²。

Example 5

Different from the example 2, the high molecular wax emulsion is uniformly coated on the surface of the packaging paper board by a spraying machine, and the dosage is 70g/m²。

Example 6

Different from the example 2, the high molecular wax emulsion is evenly coated on the surface of the packaging paper board by a spraying machine, and the dosage is 80g/m²。

Example 7

Different from the example 2, the high molecular wax emulsion is uniformly coated on the surface of the packaging paper board by a spraying machine, and the dosage is 90g/m²。

The packing boxes produced in the above examples 1, 2, 3, 4, 5, 6 and 7 were selected, respectively, and the waterproof performance of the packing box was tested according to the method described in GB/T1540-2002, "determination of water absorption of paper and paperboard (bobo method)", to determine the bobo value, i.e., the mass of water absorbed by the surface of the paperboard per unit area, for a test time of 60 s; and the adhesion degree of the polymer wax emulsion after the packaging box is soaked in water within 30min is tested, the traditional packaging box is used as a control group, and the test results are shown in the table I:

watch 1

	Bobby number (g/m)2)	Degree of adhesion
			Example 1	5.8	0.83
Example 2	4.9	0.89
			Example 3	5.4	0.86
Example 4	6.2	0.81
			Example 5	5.3	0.83
Example 6	4.7	0.91
			Example 7	5.0	0.88
Control group	7.9	0.73

As shown in the table I, the adhesion of the waterproof packaging box produced by the invention is more than 0.8, which shows that the packaging box produced by the invention has better waterproof performance, the brighness value of the polymer wax emulsion is lower than that of a control group, and the packaging box produced by the invention absorbs less water in unit time, and the waterproof performance of the packaging box is better when the components of the polymer wax emulsion are 11.5 parts of polytetrafluoroethylene resin, 14 parts of beeswax, 7.5 parts of rosin glyceride, 1.5 parts of emulsifier, 0.75 part of stearic acid, 0.5 part of chitosan and 0.08 part of nano titanium dioxide as shown in the examples 1, 2 and 3, and the dosage of the polymer wax emulsion on the surface of the packaging paper board is 80g/m as shown in the examples 2,4, 5, 6 and 7²And meanwhile, the waterproof performance of the packaging box is better.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.