CN114232383A - Water-based anti-skid back coating liquid and preparation method thereof - Google Patents
Water-based anti-skid back coating liquid and preparation method thereof Download PDFInfo
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- CN114232383A CN114232383A CN202111615329.5A CN202111615329A CN114232383A CN 114232383 A CN114232383 A CN 114232383A CN 202111615329 A CN202111615329 A CN 202111615329A CN 114232383 A CN114232383 A CN 114232383A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000007788 liquid Substances 0.000 title claims abstract description 64
- 238000000576 coating method Methods 0.000 title claims abstract description 48
- 239000011248 coating agent Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 55
- 239000011347 resin Substances 0.000 claims abstract description 37
- 229920005989 resin Polymers 0.000 claims abstract description 37
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 20
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 20
- 239000000839 emulsion Substances 0.000 claims abstract description 20
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 13
- 229920002635 polyurethane Polymers 0.000 claims abstract description 13
- 239000004814 polyurethane Substances 0.000 claims abstract description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011259 mixed solution Substances 0.000 claims description 64
- 239000000243 solution Substances 0.000 claims description 33
- 238000005303 weighing Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 238000001914 filtration Methods 0.000 claims description 7
- -1 alkyl naphthalene sulfonate sulfate Chemical compound 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 3
- 239000003995 emulsifying agent Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 150000004665 fatty acids Chemical class 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000013530 defoamer Substances 0.000 claims 1
- 239000000123 paper Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 10
- 230000035699 permeability Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 239000012263 liquid product Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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Classifications
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- 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
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/09—Sulfur-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/59—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/60—Waxes
-
- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a water-based anti-skid back coating liquid, wherein each 100 parts by weight of the water-based anti-skid back coating liquid comprises 45-53 parts of deionized water, 8-11 parts of absolute ethyl alcohol, 0.1-0.3 part of an auxiliary agent, 1.97-2.2 parts of A water-based wax, 15-17.5 parts of A water-based resin liquid, 20-23 parts of B water-based resin liquid, 0.04-0.08 part of a water-based defoaming agent and 1.35-1.7 parts of B water-based wax; wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid. The water-based anti-skid back coating liquid has the advantages of good anti-skid performance, strong stability and excellent water locking performance. Meanwhile, the invention also discloses a preparation method of the water-based anti-skid back coating liquid.
Description
Technical Field
The invention relates to the technical field of aqueous back coating liquid, in particular to aqueous anti-slip back coating liquid and a preparation method thereof.
Background
In the prior art, the back coating liquid can not meet the requirements of high-brightness series paper on transverse cutting paper collection, turnover in the printing process and machine unwinding of frame paper for cigarette packets. Therefore, there is an urgent need to develop an environmentally friendly back coating solution product and a manufacturing method thereof, which can meet the anti-slip requirements of high-brightness series paper (such as high-brightness white cardboard, high-brightness composite paper and high-brightness transfer paper).
Disclosure of Invention
In view of the above, the invention provides a water-based anti-skid back coating liquid with good anti-skid performance, strong stability and excellent water locking performance and a preparation method thereof.
On one hand, the invention provides a water-based anti-skid back coating liquid, wherein each 100 parts by weight of the water-based anti-skid back coating liquid comprises 45-53 parts of deionized water, 8-11 parts of absolute ethyl alcohol, 0.1-0.3 part of auxiliary agent, 1.97-2.2 parts of A water-based wax, 15-17.5 parts of A water-based resin liquid, 20-23 parts of B water-based resin liquid, 0.04-0.08 part of water-based defoaming agent and 1.35-1.7 parts of B water-based wax;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
Further, the aqueous resin solution A is prepared by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion, and is specifically represented as follows: 2 parts of aqueous acrylic resin solution is firstly put into a stirring container and stirred for 10 minutes at the speed of 100 r/min; adding the aqueous polyurethane emulsion into the stirring container while stirring, stirring for 30 minutes at the speed of 800r/min after the addition is finished, and standing for 30 minutes; adding ammonia water to adjust pH value, and filtering with filter screen.
Further, the pH value is 7.0-8.0.
Further, the auxiliary agent is a mixed emulsion of alkyl naphthalene sulfonate sulfate and fatty acid ester sulfate.
Further, the aqueous defoaming agent is polydimethylsiloxane.
Further, the aqueous wax A is a multiphase emulsion of synthetic wax dispersed in water under the action of an emulsifier.
Further, the B aqueous wax is an aqueous wax dispersion.
In another aspect, the invention also provides a preparation method of the water-based anti-skid back coating liquid, which comprises the following steps:
(1) respectively weighing 8-11 parts of absolute ethyl alcohol and 45-53 parts of deionized water, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution A;
(2) weighing 0.1-0.3 part of auxiliary agent, mixing with 1-3 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution B; weighing 0.04-0.08 part of aqueous defoaming agent and 0.4-0.8 part of mixed solution A, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution C; weighing 1.97-2.2 parts of aqueous wax A, mixing with 9.85-11.0 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution D; weighing 1.35-1.7 parts of the aqueous wax B, mixing with 6.75-8.5 parts of the mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution E;
(3) weighing the rest mixed solution A, pouring the mixed solution A into a stirring container, stirring the mixed solution A for 3mi at the rotating speed of 80r/min, adjusting the rotating speed to 50r/min, sequentially adding the aqueous resin solution A, the aqueous resin solution B, the mixed solution D, E and the mixed solution B while stirring, adjusting the rotating speed to 150-200 r/min after the addition is finished, and stirring the mixed solution for 60 minutes to obtain a mixed solution F;
(4) adding the mixed solution C into the mixed solution F while stirring, wherein the rotating speed is 50r/min, adjusting the rotating speed to 120r/min after the addition, and stirring for 30 minutes to obtain mixed solution G;
(5) standing the mixed solution G obtained in the step (4) for 30min, and filtering to obtain a filtrate, namely a finished product of the water-based anti-skid back coating solution.
The invention has the advantages that: compared with the existing back coating liquid, the back coating liquid produced by the invention can obviously improve the slip resistance of high-brightness series paper, has good water locking property and meets the customer service requirement. Compared with the existing back coating liquid used in the paper crosscut paper collection process and the turnover process of a printing factory, the back coating liquid can obviously reduce the manual workload, packaging materials and use adaptability, greatly reduces the labor cost and material cost, and is more energy-saving and more environment-friendly.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flow chart of a method for preparing an aqueous anti-skid back coating solution according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modifications and variations in various respects, all without departing from the spirit of the invention.
The technical solution of the present invention is illustrated by specific examples below. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Example one
The water-based anti-skid back coating liquid comprises 52.72 parts of deionized water, 8 parts of absolute ethyl alcohol, 0.3 part of auxiliary agent, 2.2 parts of A water-based wax, 15 parts of A water-based resin liquid, 20 parts of B water-based resin liquid, 0.08 part of water-based defoaming agent and 1.7 parts of B water-based wax in parts by weight;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
Example two
The water-based anti-skid back coating liquid comprises, by weight, 49.6 parts of deionized water, 9 parts of absolute ethyl alcohol, 0.2 part of an auxiliary agent, 2.1 parts of A water-based wax, 16 parts of A water-based resin liquid, 21.5 parts of B water-based resin liquid, 0.07 part of a water-based defoaming agent and 1.53 parts of B water-based wax per 100 parts;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
EXAMPLE III
The water-based anti-skid back coating liquid comprises, by weight, 47 parts of deionized water, 9.97 parts of absolute ethyl alcohol, 0.15 part of an auxiliary agent, 1.97 parts of A water-based wax, 16.73 parts of A water-based resin liquid, 22.65 parts of B water-based resin liquid, 0.05 part of a water-based defoaming agent and 1.48 parts of B water-based wax per 100 parts;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
Example four:
the water-based anti-skid back coating liquid comprises, by weight, 45 parts of deionized water, 10.81 parts of absolute ethyl alcohol, 0.1 part of an auxiliary agent, 2.2 parts of A water-based wax, 17.5 parts of A water-based resin liquid, 23 parts of B water-based resin liquid, 0.04 part of a water-based defoaming agent and 1.35 parts of B water-based wax per 100 parts;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
The ratios and product properties of the above four embodiments are shown in Table 1 below.
TABLE 1 proportioning and Properties of aqueous anti-skid back coating solution
From this, it can be seen that: when the water-based anti-skid back coating liquid product obtained in the first embodiment is actually used, the static friction coefficient value is 0.449, the dynamic friction coefficient value is 0.437, and the air permeability is 8.56 ml/min; when the water-based anti-skid back coating liquid product obtained in the example II is actually used, the static friction coefficient value is 0.564, the dynamic friction coefficient value is 0.467, and the air permeability is 8.61 ml/min; when the water-based anti-skid back coating liquid product obtained in the third embodiment is actually used, the static friction coefficient value is 0.615, the dynamic friction coefficient value is 0.561, and the air permeability is 9.28 ml/min; when the water-based anti-skid back coating liquid product obtained in the fourth embodiment is practically used, the static friction coefficient value is 0.547, the dynamic friction coefficient value is 0.522, and the air permeability is 9.19 ml/min. In the third embodiment, the obtained static friction coefficient value, dynamic friction coefficient value and air permeability are all the largest, and the optimal scheme is adopted.
In a further technical scheme, the aqueous resin solution A is prepared by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion, and the concrete expression is as follows: 2 parts of aqueous acrylic resin solution is firstly put into a stirring container and stirred for 10 minutes at the speed of 100 r/min; adding the aqueous polyurethane emulsion into the stirring container while stirring, stirring for 30 minutes at the speed of 800r/min after the addition is finished, and standing for 30 minutes; and adding ammonia water to adjust the pH value to 7.0-8.0, and filtering by using a filter screen to obtain the water-based paint. The screen is preferably a 200 mesh screen.
In the four embodiments, the auxiliary agent is a low-foaming wetting agent, specifically a mixed emulsion of alkyl naphthalene sulfonate sulfate and fatty acid ester sulfate, which has high emulsifying effect, high permeability and strong capability of reducing dynamic surface tension; the water-based defoaming agent is polydimethylsiloxane, is used for various water-based coatings, and avoids adverse effects (such as enhancing leveling property, wettability, wear resistance and smoothness) of incompatibility, extinction and the like caused by using wax; the aqueous wax A is an aqueous wax emulsion, in particular to a multiphase system emulsion of synthetic wax dispersed in water under the action of an emulsifier, and can improve the surface performance (scratch resistance, wear resistance, blocking resistance and smoothness) of an aqueous coating; the B water-based wax is a water-based wax dispersoid which can improve the surface properties (high wear resistance, high smoothness, scratch resistance, anti-blocking property and extinction) of the water-based paint.
EXAMPLE five
A method for preparing an aqueous anti-skid back coating liquid, as shown in fig. 1, the method comprises the following steps:
(1) respectively weighing 8-11 parts of absolute ethyl alcohol and 45-53 parts of deionized water, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution A;
(2) weighing 0.1-0.3 part of an auxiliary agent, mixing with 1-3 parts of the mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution B, wherein the dosage of the mixed solution A is preferably 10 times that of the auxiliary agent; weighing 0.04-0.08 part of aqueous defoaming agent and 0.4-0.8 part of mixed solution A, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution C, wherein the dosage of the mixed solution A is preferably 10 times that of the aqueous defoaming agent; weighing 1.97-2.2 parts of aqueous wax A, mixing with 9.85-11.0 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution D, wherein the dosage of the mixed solution A is preferably 5 times that of the aqueous wax A; weighing 1.35-1.7 parts of aqueous wax B, mixing with 6.75-8.5 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution E, wherein the dosage of the mixed solution A is preferably 5 times that of the aqueous wax B;
(3) weighing the rest mixed solution A, pouring the mixed solution A into a stirring container, stirring the mixed solution A for 3mi at the rotating speed of 80r/min, adjusting the rotating speed to 50r/min, sequentially adding the aqueous resin solution A, the aqueous resin solution B, the mixed solution D, E and the mixed solution B while stirring, adjusting the rotating speed to 150-200 r/min after the addition is finished, and stirring the mixed solution for 60 minutes to obtain a mixed solution F;
(4) adding the mixed solution C into the mixed solution F while stirring, wherein the rotating speed is 50r/min, adjusting the rotating speed to 120r/min after the addition, and stirring for 30 minutes to obtain mixed solution G;
(5) standing the mixed solution G obtained in the step (4) for 30min, and filtering to obtain a filtrate, namely a finished product of the water-based anti-skid back coating solution.
In step (5), the filtration was performed using a 200-mesh gauze.
When producing high-brightness series paper, the back coating liquid produced according to the invention: the paper is uniformly coated on the back surface of paper by using a 200-mesh screen roller, a speed of 100 m/min, a wet coating amount of 4.5 g/square meter to 5.0 g/square meter and a drying temperature of 90-110-100 ℃ (the specific process steps and equipment refer to the existing application process and equipment of back coating liquid), and the requirements of high-brightness series paper on transverse cutting paper collection, turnover in the printing process and machine unwinding of cigarette packets on frame paper can be well met.
In conclusion, the back coating liquid produced by the invention has the advantages of good anti-skid property, strong stability and excellent water locking property.
The above examples are merely illustrative of the principles of an aqueous slip-resistant back coating solution and a method for preparing the same according to the present invention, and are not intended to limit the present invention. Variations or modifications to the above-described embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, all equivalent modifications or changes that can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (8)
1. The water-based anti-skid back coating liquid is characterized in that each 100 parts by weight of the water-based anti-skid back coating liquid comprises 45-53 parts of deionized water, 8-11 parts of absolute ethyl alcohol, 0.1-0.3 part of auxiliary agent, 1.97-2.2 parts of A water-based wax, 15-17.5 parts of A water-based resin liquid, 20-23 parts of B water-based resin liquid, 0.04-0.08 part of water-based defoaming agent and 1.35-1.7 parts of B water-based wax;
wherein the aqueous resin solution A is formed by stirring 2 parts of aqueous acrylic resin solution and 1 part of aqueous polyurethane emulsion; the aqueous resin liquid B is modified acrylic resin liquid.
2. The aqueous anti-skid back coating liquid as claimed in claim 1, wherein the aqueous resin liquid A is prepared by stirring 2 parts of aqueous acrylic resin liquid and 1 part of aqueous polyurethane emulsion, and is characterized in that: 2 parts of aqueous acrylic resin solution is firstly put into a stirring container and stirred for 10 minutes at the speed of 100 r/min; adding the aqueous polyurethane emulsion into the stirring container while stirring, stirring for 30 minutes at the speed of 800r/min after the addition is finished, and standing for 30 minutes; adding ammonia water to adjust pH value, and filtering with filter screen.
3. The aqueous slip-resistant back-coating liquid of claim 2, wherein the PH is 7.0 to 8.0.
4. The aqueous slip-resistant back-coating liquid according to claim 1, wherein the auxiliary agent is a mixed emulsion of alkyl naphthalene sulfonate sulfate and fatty acid ester sulfate.
5. The aqueous slip-resistant back-coating liquid of claim 1, wherein the aqueous defoamer is polydimethylsiloxane.
6. The aqueous slip-resistant back-coating liquid of claim 1, wherein the aqueous wax a is a multi-phase system emulsion of synthetic wax dispersed in water under the action of an emulsifier.
7. The aqueous slip-resistant back-coating liquid of claim 1, wherein the aqueous wax B is an aqueous wax dispersion.
8. The preparation method of the water-based anti-skid back coating liquid is characterized by comprising the following steps of:
(1) respectively weighing 8-11 parts of absolute ethyl alcohol and 45-53 parts of deionized water, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution A;
(2) weighing 0.1-0.3 part of auxiliary agent, mixing with 1-3 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution B; weighing 0.04-0.08 part of aqueous defoaming agent and 0.4-0.8 part of mixed solution A, mixing, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution C; weighing 1.97-2.2 parts of aqueous wax A, mixing with 9.85-11.0 parts of mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain mixed solution D; weighing 1.35-1.7 parts of the aqueous wax B, mixing with 6.75-8.5 parts of the mixed solution A, and stirring at the rotating speed of 80-120 r/min for 5min to obtain a mixed solution E;
(3) weighing the rest mixed solution A, pouring the mixed solution A into a stirring container, stirring the mixed solution A for 3mi at the rotating speed of 80r/min, adjusting the rotating speed to 50r/min, sequentially adding the aqueous resin solution A, the aqueous resin solution B, the mixed solution D, E and the mixed solution B while stirring, adjusting the rotating speed to 150-200 r/min after the addition is finished, and stirring the mixed solution for 60 minutes to obtain a mixed solution F;
(4) adding the mixed solution C into the mixed solution F while stirring, wherein the rotating speed is 50r/min, adjusting the rotating speed to 120r/min after the addition, and stirring for 30 minutes to obtain mixed solution G;
(5) standing the mixed solution G obtained in the step (4) for 30min, and filtering to obtain a filtrate, namely a finished product of the water-based anti-skid back coating solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111615329.5A CN114232383A (en) | 2021-12-27 | 2021-12-27 | Water-based anti-skid back coating liquid and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111615329.5A CN114232383A (en) | 2021-12-27 | 2021-12-27 | Water-based anti-skid back coating liquid and preparation method thereof |
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