CN113247442A - Color box processing and producing method - Google Patents

Color box processing and producing method Download PDF

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Publication number
CN113247442A
CN113247442A CN202110728801.XA CN202110728801A CN113247442A CN 113247442 A CN113247442 A CN 113247442A CN 202110728801 A CN202110728801 A CN 202110728801A CN 113247442 A CN113247442 A CN 113247442A
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paper
color box
back board
corrugated paper
protective liquid
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CN202110728801.XA
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CN113247442B (en
Inventor
梁丹
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Shanghai Denchi Packing Material Co ltd
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Shanghai Denchi Packing Material Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
    • C09J103/02—Starch; Degradation products thereof, e.g. dextrin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/28—Polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The application relates to the field of color box processing, and particularly discloses a waterproof color box processing production method, which comprises the following steps: s1, cutting the surface paper, the corrugated paper and the back board paper into the same shape; s2, sequentially arranging the surface paper, the corrugated paper and the back board paper from top to bottom, coating protective liquid on the surfaces of the surface paper, the corrugated paper and the back board paper which are mutually connected, and then drying for later use; the raw materials for preparing the protective liquid comprise acrylic ester, waterborne polyurethane, nonionic surfactant and absolute ethyl alcohol; s3, sequentially arranging the surface paper, the corrugated paper and the back board paper coated with the protective liquid from top to bottom, and then coating an adhesive on the surface of the corrugated paper for adhesion to obtain a paperboard; the raw materials for preparing the adhesive comprise water, water-based acrylic acid, glutinous rice flour and polyethylene glycol; and S4, drying the paperboard, impressing, bending, and bonding again by using an adhesive to obtain the color box. The color box has the advantage of reducing the possibility that corrugated paper and back board paper or surface paper are peeled off in a humid environment.

Description

Color box processing and producing method
Technical Field
The application relates to the field of color box processing, in particular to a color box processing and producing method.
Background
The color box is a folding paper box produced and processed by using paperboard and micro corrugated board, is generally produced by a color box printing and packaging factory and is mainly used for containing and packaging articles. The color box is usually made of a plurality of colors according to the articles to be packaged, so that the purchasers and users can have initial understanding on the overall appearance and color details of the commodities.
The color box is widely applied to the industries of electronics, food, beverage, wine, medicine, health care products and the like and the packaging of products. The current production process of color boxes is rapidly developed, and more high-quality color boxes are put into the commercial market. The color box is usually processed and produced by cutting, adhering the corrugated paper, the back board paper and the surface paper to form the paper board, then stamping and bending the paper board, and the like, so that the processing technology is complex, and the problem that the corrugated paper and the back board paper or the surface paper are peeled off in the wet environment of the color box obtained by processing causes the loss of manufacturers.
With respect to the related art in the above, the inventors consider that: it is highly desirable to reduce the possibility of the peeling between the corrugated paper and the backing paper in the wet environment.
Disclosure of Invention
In order to reduce the possibility that corrugated paper and back board paper of the color box are peeled off in a humid environment, the application provides a color box processing and producing method.
The application provides a color box processing production method adopts the following technical scheme:
a method for processing and producing color boxes comprises the following steps:
s1, cutting the surface paper, the corrugated paper and the back board paper into the same shape;
s2, sequentially arranging the surface paper, the corrugated paper and the back board paper from top to bottom, coating protective liquid on the surfaces of the surface paper, the corrugated paper and the back board paper which are mutually connected, and then drying for later use; the preparation raw materials of the protective liquid comprise (2-5) by weight: (2-3): (0.3-0.5) 3 of acrylic ester, aqueous polyurethane, nonionic surfactant and absolute ethyl alcohol;
s3, sequentially arranging the surface paper, the corrugated paper and the back board paper coated with the protective liquid from top to bottom, and then coating an adhesive on the surface of the corrugated paper for adhesion to obtain a paperboard; the adhesive is prepared from the following raw materials in parts by weight (6-8): (1-2): (2-4): (0.5-1.2) water, water-based acrylic acid, glutinous rice flour, polyethylene glycol;
and S4, drying the paperboard, impressing, bending, and bonding again by using an adhesive to obtain the color box.
By adopting the technical scheme, the surface of the surface paper, the corrugated paper and the back board paper which are mutually connected is coated with the protective liquid, so that the waterproofness of the surface paper, the corrugated paper and the back board paper is improved, the acrylate in the protective liquid can form hydrogen bonds with hydroxyl groups among paper fibers, the bonding force among the fibers is improved, the protective liquid can interact with the adhesive, the adhesion among the surface paper, the corrugated paper and the back board paper is improved, and the possibility that the corrugated paper and the back board paper or the surface paper of the color box are peeled off in a humid environment is reduced.
Preferably, the acrylate in the protective liquid is a mixture of isooctyl acrylate and hydroxypropyl acrylate.
By adopting the technical scheme, the protective liquid is compounded by using the isooctyl acrylate and the hydroxypropyl acrylate, so that the dispersity of a protective liquid system is improved, the adhesion between the adhesive and the surface paper, the corrugated paper and the back board paper is improved, and the possibility of peeling the corrugated paper and the back board paper or the surface paper of the color box in a humid environment is reduced.
Preferably, the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is (1-3): 2.
by adopting the technical scheme, when the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is (1-3): and 2, the compatibility of the protective liquid system is higher, the adhesion between the adhesive and the surface paper, the corrugated paper and the back board paper is higher, and the possibility that the corrugated paper and the back board paper or the surface paper of the color box are peeled off in a humid environment is lower.
Preferably, the nonionic surfactant in the protective liquid is selected from one of alkylphenol ethoxylates and fatty acid polyoxyethylene esters.
By adopting the technical scheme, the dispersion of the alkylphenol ethoxylates and the fatty acid polyoxyethylene ester in the protective liquid system is high, the interfacial tension of the protective liquid system is reduced, the compatibility of the protective liquid system is improved, and the adhesion among the adhesive, the surface paper, the corrugated paper and the back board paper is enhanced.
Preferably, the number average molecular weight of the polyethylene glycol in the binder is 2000-4000.
By adopting the technical scheme, the polyethylene glycol with the number average molecular weight of 2000-4000 has higher viscosity, the adhesiveness of the adhesive is improved, and the possibility of peeling the corrugated paper and the back board paper or the surface paper of the color box in a humid environment is reduced.
Preferably, the drying temperature in the step S2 is 40-60 ℃.
By adopting the technical scheme, the drying effect is better when the drying temperature is 40-60 ℃, the effect of the protective liquid cannot be reduced, and the possibility that the corrugated paper and the back board paper or the surface paper of the color box are peeled off in a humid environment is reduced.
Preferably, the drying temperature in the step S4 is 35-48 ℃.
By adopting the technical scheme, the adhesive has good bonding effect when the drying temperature is 35-48 ℃.
Preferably, the stamping pressure during the indentation in the step S4 is 3.5-4 kg-f/cm2The stamping time is 0.1-0.2 s.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the method, the protective liquid is coated on the surfaces of the surface paper, the corrugated paper and the back board paper which are mutually connected, the protective liquid can interact with the adhesive, the adhesion among the surface paper, the corrugated paper and the back board paper is improved, and the possibility that the corrugated paper and the back board paper or the surface paper of the color box are peeled off in a humid environment is reduced;
2. the application preferably adopts the compounding of isooctyl acrylate and hydroxypropyl acrylate, so that the adhesiveness between the adhesive and the surface paper, corrugated paper and back board paper is improved;
3. the protective liquid is preferably dried at the temperature of 40-60 ℃, the drying effect is better, the effect of the protective liquid cannot be reduced, and the possibility that the corrugated paper and the back board paper or the surface paper of the color box are peeled off in a humid environment is reduced.
Detailed Description
The present application is further described in detail below with reference to the preparation examples and examples, wherein the surface paper used in the present application is single copper paper, available from shun dynasty, paper industry ltd; the corrugated paper has an E edge and a thickness of 4mm, and is purchased from exhibition packaging material Co., Ltd of Guangzhou city; the type of the used back board paper is SL-007, which is purchased from Sonlin paper industry Co., Ltd of Dongguan; the absolute ethyl alcohol used in the application is purchased from chemical reagents of national drug group, ltd; the sources of the raw materials used in the present application are shown in Table 1, unless otherwise specified.
TABLE 1 sources of raw materials used in the present application
Figure BDA0003138557060000031
Preparation example of protective liquid
Preparation example 1
A protective liquid is prepared by the following steps: uniformly mixing 350g of acrylic ester, 250g of waterborne polyurethane, 40g of nonionic surfactant and 300g of absolute ethyl alcohol to prepare a protective liquid; the acrylate is isooctyl acrylate; the nonionic surfactant used is polyoxyethylene alkylamine.
Preparation examples 2 to 5
Preparation examples 2 to 5 are based on preparation example 1 and differ from preparation example 1 only in that: the dosage of each raw material for preparing the protective liquid is different, and the specific dosage is shown in table 2.
TABLE 2 preparation examples 1 to 5 different amounts of raw materials
Figure BDA0003138557060000041
Preparation example 6
Preparation 6 is based on preparation 1, differing from preparation 1 only in that: the acrylate used was hydroxypropyl acrylate.
Preparation example 7
Preparation 7 is based on preparation 6 and differs from preparation 6 only in that: the acrylate is a mixture of isooctyl acrylate and hydroxypropyl acrylate, and the weight ratio of isooctyl acrylate to hydroxypropyl acrylate is 5: 2.
preparation example 8
Preparation 8 is based on preparation 6 and differs from preparation 6 only in that: the acrylate used is a mixture of isooctyl acrylate and hydroxypropyl acrylate, and the weight ratio of isooctyl acrylate to hydroxypropyl acrylate is 1: 3.
preparation example 9
Preparation 9 is based on preparation 8 and differs from preparation 8 only in that: the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is 1: 2.
preparation example 10
Preparation 10 is based on preparation 8, and differs from preparation 8 only in that: the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is 3: 2.
preparation example 11
Preparation 11 is based on preparation 8, and differs from preparation 8 only in that: the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is 1: 1.
preparation example 12
Preparation 12 is based on preparation 11, differing from preparation 11 only in that: the nonionic surfactant is alkylphenol ethoxylates.
Preparation example 13
Preparation 13 is based on preparation 11 and differs from preparation 11 only in that: the nonionic surfactant is polyoxyethylene fatty acid ester.
Preparation example of adhesive
Preparation example 14
An adhesive is prepared by the following steps: heating 700g of water to 70 ℃, adding 300g of glutinous rice flour, stirring into paste, adding 150g of water-based acrylic acid and 100g of polyethylene glycol, and uniformly mixing to obtain an adhesive; the polyethylene glycol used had a number average molecular weight of 1000.
Preparation examples 15 to 16
Preparation examples 15 to 16 are based on preparation example 14 and differ from preparation example 14 only in that: the raw materials used for preparing the adhesive are different in amount, and the specific table is shown in table 3.
TABLE 3 preparation examples 14 to 16 each raw material amount
Figure BDA0003138557060000051
Preparation example 17
Preparation 17 is based on preparation 14 and differs from preparation 14 only in that: the polyethylene glycol used had a number average molecular weight of 5000.
Preparation example 18
Preparation 18 is based on preparation 14 and differs from preparation 14 only in that: the polyethylene glycol used had a number average molecular weight of 2000.
Preparation example 19
Preparation 19 is based on preparation 14 and differs from preparation 14 only in that: the polyethylene glycol used had a number average molecular weight of 4000.
Preparation example 20
Preparation 20 is based on preparation 14 and differs from preparation 14 only in that: the polyethylene glycol used had a number average molecular weight of 3000.
Comparative preparation example
Comparative preparation example 1
Comparative preparation example 1 is based on preparation example 1, differing from preparation example 1 only in that: the surfactant used in the preparation of the protective solution was dioctadecyldimethylammonium chloride having a CAS number of 107-64-2, available from Shandong national chemical Co., Ltd.
Comparative preparation example 2
Comparative preparation example 2 is based on preparation example 1, differing from preparation example 1 only in that: when the protective liquid is prepared, the acrylic ester is replaced by the waterborne polyurethane with equal mass.
Comparative preparation example 3
Comparative preparation 3 is based on preparation 14 and differs from preparation 14 only in that: the adhesives of the examples were prepared by replacing the polyethylene glycol with an equal mass of aqueous acrylic acid.
Comparative preparation example 4
Comparative preparation 4 is based on preparation 14 and differs from preparation 14 only in that: the adhesives of the examples were prepared by replacing the aqueous acrylic acid with polyethylene glycol of equal mass.
Examples
Example 1
A method for processing and producing color boxes comprises the following steps:
s1, cutting the surface paper, the corrugated paper and the back board paper into the same shape;
s2, sequentially arranging the surface paper, the corrugated paper and the back board paper from top to bottom, and coating protective liquid on the surfaces of the surface paper, the corrugated paper and the back board paper which are connected with each other, wherein the coating amount of the protective liquid is 1g/m2Then drying the mixture at 70 ℃ for later use;
s3, sequentially arranging the surface paper, the corrugated paper and the back board paper coated with the protective liquid from top to bottom, and then coating an adhesive on the surface of the corrugated paper for adhesion, wherein the coating amount of the adhesive is 2g/m2To obtain a paperboard;
s4, drying the paperboard at 60 ℃, and then drying the paperboard at 3.8kg · f/cm2Performing indentation under stamping pressure for 0.1s, bending, and bonding the joint with adhesive at a coating amount of 1.2g/m2；
The protective solution used was from preparation example 1; the binder used was derived from preparation 14.
Examples 2 to 3
Examples 2 to 3 are based on example 1 and differ from example 1 only in that: the preparation conditions are different, and the details are shown in Table 4.
TABLE 4 preparation conditions of examples 1 to 3
Examples Punching pressure (kg. f/cm2) Punching time(s)
Example 1 3.8 0.1
Example 2 3.5 0.2
Example 3 4 0.2
Examples 4 to 15
Examples 4 to 15 are based on example 1 and differ from example 1 only in that: the source of the protective solution used was varied and is shown in Table 5.
TABLE 5 sources of the protective solutions used in examples 4-15
Figure BDA0003138557060000061
Figure BDA0003138557060000071
Examples 16 to 21
Examples 16 to 21 are based on example 15 and differ from example 15 only in that: the source of the binder used was varied and is shown in Table 6.
TABLE 6 examples 16-21 adhesive sources
Examples Adhesive source
Example 16 Preparation example 15
Example 17 Preparation example 16
Example 18 Preparation example 17
Example 19 Preparation example 18
Example 20 Preparation example 19
Example 21 Preparation example 20
Example 22
Example 22 is based on example 21 and differs from example 21 only in that: the drying temperature in the step S2 is 40 ℃.
Example 23
Example 23 is based on example 21 and differs from example 21 only in that: the drying temperature in the step S2 is 60 ℃.
Example 24
Example 24 is based on example 23 and differs from example 23 only in that: the drying temperature in the step S4 was 35 ℃.
Example 25
Example 25 is based on example 23 and differs from example 23 only in that: the drying temperature in the step S4 is 48 ℃.
Comparative example
Comparative example 1
Comparative example 1 is based on example 1 and differs from example 1 only in that: the protective liquid used originates from comparative preparation example 1.
Comparative example 2
Comparative example 2 is based on example 1 and differs from example 1 only in that: the protective liquid used originates from comparative preparation example 2.
Comparative example 3
Comparative example 3 is based on example 1 and differs from example 1 only in that: the binder used originates from comparative preparation example 3.
Comparative example 4
Comparative example 4 is based on example 1 and differs from example 1 only in that: the binder used originates from comparative preparation example 4.
Comparative example 5
Comparative example 5 is based on example 1 and differs from example 1 only in that: the surface paper, the corrugated paper and the back plate paper are not coated with the protective liquid.
Comparative example 6
Comparative example 6 is based on example 1 and differs from example 1 only in that: the adhesive used was designated SA-226 and was obtained from En chemical Co., Ltd, Anhui.
Performance test
The color boxes obtained in examples 1 to 24 and comparative examples 1 to 6 were subjected to the following performance tests, respectively.
Adhesive strength test the color boxes prepared in examples 1 to 24 and comparative examples 1 to 6 were placed in an environment of 25 ℃ and 75% relative humidity for 30 days, and then the adhesive strength between the surface paper and the corrugated paper of the color boxes and the adhesive strength between the back paper and the corrugated paper were tested according to the specification of GB/T6548-.
TABLE 7 test results of examples 1-24 and comparative examples 1-6
Figure BDA0003138557060000081
Figure BDA0003138557060000091
The above data shows that the adhesion strength between the corrugated paper and the surface paper and the adhesion strength between the corrugated paper and the back paper are not less than 8N/m, and the adhesion strength between the corrugated paper and the back paper is not less than 9N/m, and the data of comparative examples 1-3 shows that example 1 is the best example of examples 1-3.
Analysis of the data of example 1 and comparative examples 1 to 6 shows that the adhesive strength between the corrugated paper and the back paper, and between the corrugated paper and the surface paper is significantly reduced when the protective liquid is not used, and if the adhesive defined in the present application is not used, the adhesive strength between the corrugated paper and the back paper, and between the corrugated paper and the surface paper is also significantly reduced, which indicates that the protective liquid is coated on the surface where the surface paper, the corrugated paper, and the back paper are connected to each other, so that the water resistance of the surface paper, the corrugated paper, and the back paper can be improved, and the acrylate in the protective liquid can form hydrogen bonds with the hydroxyl groups between the paper fibers, so that the bonding force between the fibers is improved, and the protective liquid can interact with the adhesive, so that the adhesion between the surface paper, the corrugated paper, and the back paper is improved, and the possibility of the color box that the corrugated paper and the back paper or the surface paper are peeled off in a humid environment is reduced.
Analysis of the data of examples 9-10 and 8, example 1 shows that when the acrylate used to prepare the protective liquid is a mixture of isooctyl acrylate and hydroxypropyl acrylate, the adhesion strength between the corrugated paper and the backing paper and between the corrugated paper and the face paper is significantly improved, indicating that isooctyl acrylate and hydroxypropyl acrylate can interact with each other, improving the dispersibility of the protective liquid system and thus improving the adhesion of the adhesive to the face paper, corrugated paper and backing paper.
Analyzing the data of examples 11-13 and example 10, it can be seen that when the weight ratio of isooctyl acrylate to hydroxypropyl acrylate is (1-3): and 2, the adhesive strength between the corrugated paper and the back board paper and between the corrugated paper and the surface paper is improved, which shows that the compatibility of the protective liquid system is higher and the adhesiveness between the adhesive and the surface paper, the corrugated paper and the back board paper is higher. Wherein when the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is 1: 1, the bonding strength between the corrugated paper and the back board paper and between the corrugated paper and the surface paper is higher.
It can be seen from the analysis of the data in examples 14 to 15 and example 13 that when the nonionic surfactant in the protective liquid is alkylphenol ethoxylates or fatty acid polyoxyethylene esters, the adhesive strength between the corrugated paper and the back board paper and between the corrugated paper and the surface paper is improved, which indicates that the alkylphenol ethoxylates and fatty acid polyoxyethylene esters have high dispersibility in the protective liquid system, reduce the interfacial tension of the protective liquid system, improve the compatibility of the protective liquid system, and enhance the adhesion between the adhesive and the surface paper, the corrugated paper and the back board paper.
Analysis of the data of examples 19-21, 18 and 17 shows that the polyethylene glycol used in the preparation of the adhesive has a number average molecular weight of 2000-4000, the adhesive strength between the corrugated paper and the backing paper and between the corrugated paper and the surface paper is improved, which indicates that the adhesive has higher adhesiveness and reduces the possibility of peeling the corrugated paper and the backing paper or the surface paper of the color box under a humid environment.
As can be seen from the analysis of the data in examples 22 to 23 and example 21, when the drying temperature in step S2 is 40 to 60 ℃, the adhesive strength between the corrugated paper and the backing paper and between the corrugated paper and the surface paper are improved, which indicates that when the drying temperature of the protective liquid is 40 to 60 ℃, the drying effect is better, the effect of the protective liquid is not reduced, and the possibility of peeling the corrugated paper from the backing paper or the surface paper in a humid environment of the color box is reduced.
As can be seen from the analysis of the data in examples 24 to 25 and example 23, when the drying temperature in step S4 is 35 to 48 ℃, the adhesive strength between the corrugated paper and the back sheet and between the corrugated paper and the surface paper is improved, indicating that the adhesive has a good adhesive effect when the drying temperature is 35 to 48 ℃.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (8)

1. The color box processing and producing method is characterized by comprising the following steps:
s1, cutting the surface paper, the corrugated paper and the back board paper into the same shape;
s2, sequentially arranging the surface paper, the corrugated paper and the back board paper from top to bottom, coating protective liquid on the surfaces of the surface paper, the corrugated paper and the back board paper which are mutually connected, and then drying for later use; the preparation raw materials of the protective liquid comprise (2-5) by weight: (2-3): (0.3-0.5) 3 of acrylic ester, aqueous polyurethane, nonionic surfactant and absolute ethyl alcohol;
s3, sequentially arranging the surface paper, the corrugated paper and the back board paper coated with the protective liquid from top to bottom, and then coating an adhesive on the surface of the corrugated paper for adhesion to obtain a paperboard; the adhesive is prepared from the following raw materials in parts by weight (6-8): (1-2): (2-4): (0.5-1.2) water, water-based acrylic acid, glutinous rice flour, polyethylene glycol;
and S4, drying the paperboard, impressing, bending, and bonding again by using an adhesive to obtain the color box.
2. The color box processing and producing method according to claim 1, characterized in that: the acrylate in the protective liquid is a mixture of isooctyl acrylate and hydroxypropyl acrylate.
3. The color box processing and producing method according to claim 2, characterized in that: the weight ratio of the isooctyl acrylate to the hydroxypropyl acrylate is (1-3): 2.
4. the color box processing and producing method according to claim 1, characterized in that: the nonionic surfactant in the protective liquid is selected from one of alkylphenol ethoxylates and fatty acid polyoxyethylene esters.
5. The color box processing and producing method according to claim 1, characterized in that: the number average molecular weight of the polyethylene glycol in the adhesive is 2000-4000.
6. The color box processing and producing method according to claim 1, characterized in that: and the drying temperature in the step S2 is 40-60 ℃.
7. The color box processing and producing method according to claim 1, characterized in that: and the drying temperature in the step S4 is 35-48 ℃.
8. The color box processing and producing method according to claim 1, characterized in that: the stamping pressure during indentation in the step S4 is 3.5-4 kg.f/cm2The stamping time is 0.1-0.2 s.
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