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CN112501943A - Water-based digital paint paper and preparation method and application thereof - Google Patents

Water-based digital paint paper and preparation method and application thereof Download PDF

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Publication number
CN112501943A
CN112501943A CN202011205264.2A CN202011205264A CN112501943A CN 112501943 A CN112501943 A CN 112501943A CN 202011205264 A CN202011205264 A CN 202011205264A CN 112501943 A CN112501943 A CN 112501943A
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China
Prior art keywords
digital
water
paper
preparation
coating
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Pending
Application number
CN202011205264.2A
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Chinese (zh)
Inventor
李新育
徐昆
徐凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Foshan Tianyuan Hejin Decoration Material Co ltd
Guangdong Tianyuan Huibang New Material Co ltd
Original Assignee
Foshan Nanhai Tianyuan Maoxin New Material Co ltd
Foshan Tianyuan Hejin Decoration Material Co ltd
Guangdong Tianyuan Huibang New Material Co ltd
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Application filed by Foshan Nanhai Tianyuan Maoxin New Material Co ltd, Foshan Tianyuan Hejin Decoration Material Co ltd, Guangdong Tianyuan Huibang New Material Co ltd filed Critical Foshan Nanhai Tianyuan Maoxin New Material Co ltd
Priority to CN202011205264.2A priority Critical patent/CN112501943A/en
Publication of CN112501943A publication Critical patent/CN112501943A/en
Pending legal-status Critical Current

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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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • 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
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • 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
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • 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
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
    • 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
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention relates to the field of furniture paint paper, and discloses water-based digital paint paper as well as a preparation method and application thereof; the water-based digital paint paper comprises pre-impregnated backing paper, a digital bottom coating, a digital printing decorative layer and a protective layer from top to bottom in sequence; the digital printing decorative layer is made of digital water-based ink; the digital bottom coating is composed of digital bottom coating liquid, and the protective layer is composed of water-based varnish. The paint paper disclosed by the invention has the advantages of good covering property, uniform fiber distribution, fine paper surface, good air permeability, high sun-proof level, bright and full color, higher solvent resistance and chemical pollution resistance of furniture level, and no formaldehyde in the paint paper.

Description

Water-based digital paint paper and preparation method and application thereof
Technical Field
The invention relates to the field of furniture paint paper, in particular to water-based digital paint paper and a preparation method and application thereof.
Background
With the development and progress of society, the requirements of people on living environment and individuation are higher and higher. On the one hand, in order to meet environmental requirements, and on the other hand, the market for diversified and personalized printing is increasing, so that the market for short-cut printing is rapidly increasing. Compared with short-plate printing, digital printing has the advantages of low manufacturing cost, flexibility, convenience, less production equipment, individuation, short period and the like, and is rapidly developed in personalized customized furniture in recent years, the high-gram-weight decorative paper is mainly used in the early stage, the basic process is that the decorative paper needs to be subjected to a melamine impregnation process after being digitally printed, the process is complex, a certain amount of decorative paper is needed, and the advantage of digital quantity cannot be exerted. In addition, the problem caused by formaldehyde release in melamine impregnation for digital printing has been troubling the veneering of decorative materials for a long time, and meanwhile, the impregnated paper cannot be curled to invisibly limit the application range, so that the transportation and storage costs are increased, and the problems of shrinkage, poor adhesion, low surface definition, poor flatness and the like can be caused.
Disclosure of Invention
The invention aims to provide water-based digital paint paper and a preparation method thereof. The paint paper disclosed by the invention has the advantages of good covering property, uniform fiber distribution, fine paper surface, good air permeability, high sun-proof level, bright and full color, higher solvent resistance and chemical pollution resistance of furniture level and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
the water-based digital paint paper sequentially comprises the following components from top to bottom: pre-impregnated backing paper, a digital bottom coating, a digital printing decorative layer and a protective layer; the digital bottom coating is composed of digital bottom coating liquid; the digital printing decorative layer is made of digital water-based ink; the protective layer is composed of water-based varnish.
Preferably, the pre-impregnated backing paper has a basis weight of 70 to 120g/m2. The preimpregnated paper is made up by using special decorative paper and then impregnating it with one or two kinds of acrylic latex or amino resin adhesive, and the content of adhesive is 5-20%.
Preferably, the digital water-based ink comprises the following raw materials in percentage by weight: 1-10% of pigment, 2-10% of 1, 2-hexanediol, 0-1% of NaOH, 0-1% of KaOH, 0.005-0.01% of 2-methyl-isothiazoline and 50-80% of water.
More preferably, the pigment is one of iron oxide red powder, permanent yellow powder, titanium dioxide, carbon black, titanium blue powder and ultramarine powder.
A preparation method of water-based digital paint paper comprises the following steps:
(1) coating the digital base coating liquid on the pre-impregnated paper through a coating group of a digital printer to form a digital base coating, printing the digital water-based ink on the surface through the digital printer to form patterns or decorative patterns, and drying to obtain a digital printing decorative layer;
(2) coating the water-based varnish on printing paper, drying by hot air, and rolling to obtain the paper.
Preferably, the digital primer coating liquid comprises the following raw materials in percentage by weight: 5-10% of polyvinyl alcohol, 15-20% of nano silicon dioxide, 1-2% of dispersing agent, 0.1-0.3% of defoaming agent and 0.1-0.5% of cationic color fixing agent.
Preferably, the digital primer coating liquid further comprises the following raw materials in percentage by weight: 0.15-0.2% of pH value regulator, 4-5% of humectant and 0.1-0.3% of preservative.
More preferably, the molecular weight of the polyvinyl alcohol is 30000-120000.
More preferably, the dispersing agent is fatty alcohol-polyoxyethylene ether or polyvinylpyrrolidone.
More preferably, the defoamer is a polyvinyl alcohol ester or a polyethylene glycol fatty acid mixture.
More preferably, the cationic fixing agent is polyethyleneimine or polyvinylamine.
More preferably, the pH adjuster is at least one of ammonia or triethanolamine.
More preferably, the humectant is at least one of ethylene glycol, triethylene glycol, propylene glycol, 2-methyl-2, 4-pentanediol, 1,2, 6-hexanethiol, and thioglycol.
More preferably, the preservative is at least one of benzoate or sorbitol.
Preferably, the aqueous varnish layer comprises the following raw materials in percentage by weight: 50-60% of amino modified acrylic resin emulsion, 4-5% of organic acid curing agent, 0-0.2% of organic silicon assistant and 30-40% of water.
Preferably, the preparation method of the aqueous gloss oil layer comprises the following steps: mixing the amino modified acrylic resin emulsion and the organic acid curing agent, adding water, adjusting the viscosity, and adding the organic silicon assistant to obtain the acrylic resin emulsion.
More preferably, the organic acid curing agent is at least one of benzenesulfonic acid, p-toluenesulfonic acid and naphthalenesulfonic acid.
More preferably, the silicone additive is at least one of a polyether modified siloxane or a reactive modified silane.
Preferably, in the step (1), the coating amount of the digital primer coating on the pre-impregnated paper is 3-8g/m2。
Preferably, in the step (1), the drying temperature is 40-60 ℃.
Preferably, in the step (1), the coating amount of the digital water-based ink isIs 1 to 6g/m2。
The invention also provides a decorative plate, and the surface of the decorative plate contains the water-based digital paint paper.
The invention has the advantages that:
(1) the paint paper disclosed by the invention has the advantages of good covering property, uniform fiber distribution, fine paper surface, good air permeability, high sun-proof level, bright and full color, higher solvent resistance and chemical pollution resistance of furniture level, and no formaldehyde in the paint paper.
(2) The digital water-based ink is printed on the surface of the pre-impregnated paper to form patterns or figures, so that the paint paper has excellent pigment purity and excellent light fastness; the digital water-based ink disclosed by the invention has the advantages of high viscosity, low surface tension and good stability.
(3) The surface of the paint paper is coated with a layer of water-based varnish layer to form a protective layer, so that the surface of the paint paper can reach the quality standard of furniture grade, and the paint paper has the properties of high solvent resistance, chemical pollution resistance, scratch resistance, wear resistance and the like.
(4) The digital primer coating liquid has excellent adhesive force, utilizes the nano silicon dioxide modified polyvinyl alcohol to improve the mechanical property, namely the adhesive force of the nano silicon dioxide modified polyvinyl alcohol to digital water-based ink, also has excellent ink absorption property, can be quickly fixed and dried on a digital printer, and has excellent ink transfer effect.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Detailed Description
For a further understanding of the invention, preferred embodiments of the invention are described below with reference to the examples to further illustrate the features and advantages of the invention, and any changes or modifications that do not depart from the gist of the invention will be understood by those skilled in the art to which the invention pertains, the scope of which is defined by the scope of the appended claims.
Those who do not specify specific conditions in the examples of the present invention follow conventional conditions or conditions recommended by the manufacturer. The raw materials, reagents and the like which are not indicated for manufacturers are all conventional products which can be obtained by commercial purchase.
Example 1
The water-based digital paint paper of the embodiment comprises a pre-impregnated backing paper 100, a digital primer 200, a digital printing decorative layer 300 and a protective layer 400 from top to bottom; the digital printing decoration layer 300 is made of digital water-based ink; the digital primer layer 200 is composed of a digital primer liquid, and the protective layer 400 is composed of water-based varnish.
The pre-impregnated backing paper has a basis weight of 70-120g/m2。
The digital base coating liquid comprises the following raw materials in percentage by weight: 10% of polyvinyl alcohol with the molecular weight of 50000, 15% of nano silicon dioxide, 0.8% of fatty alcohol-polyoxyethylene ether, 1.2% of polyvinylpyrrolidone, 0.2% of polyvinyl alcohol ester, 0.3% of polyethyleneimine, 0.2% of ammonia water, 2% of ethylene glycol, 2% of triethylene glycol and 0.2% of benzoate.
The digital water-based ink comprises the following raw materials in percentage by weight: 8% of iron oxide red powder, 8% of 1, 2-hexanediol, 0.5% of NaOH0.2%, 0.005-0.01% of 2-methyl-isothiazoline and 75% of water.
The water-based gloss oil comprises the following raw materials in percentage by weight: 56% of amino modified acrylic resin emulsion, 2.5% of naphthalenesulfonic acid, 2.4% of benzenesulfonic acid, 0.1% of polyether modified siloxane and 39% of water.
A preparation method of water-based digital paint paper comprises the following steps:
(1) coating weight of 6g/m by coating group of digital printer2The digital undercoat liquid of (2) is applied to a prepreg paper 100 to form a digital undercoat layer 200, and the amount of the applied liquid is 5g/m by a digital printer2The digital water-based ink is printed on the surface to form patterns or decorative patterns, and the patterns or the decorative patterns are dried to obtain a digital printing decorative layer 300;
(2) coating the water-based varnish on printing paper, drying by hot air at 50 ℃ to obtain a protective layer 400, and rolling to obtain the paper.
Example 2
The water-based digital paint paper of the embodiment comprises a pre-impregnated backing paper 100, a digital primer 200, a digital printing decorative layer 300 and a protective layer 400 from top to bottom; the digital printing decoration layer 300 is made of digital water-based ink; the digital primer layer 200 is composed of a digital primer liquid, and the protective layer 400 is composed of water-based varnish.
The pre-impregnated backing paper has a basis weight of 70-120g/m2。
The digital base coating liquid comprises the following raw materials in percentage by weight: 9% of polyvinyl alcohol, 18% of nano silicon dioxide, 0.8% of fatty alcohol-polyoxyethylene ether, 1.2% of polyvinylpyrrolidone, 0.2% of polyvinyl alcohol ester, 0.3% of polyethyleneimine, 0.2% of ammonia water, 2% of ethylene glycol, 2% of triethylene glycol and 0.2% of benzoate.
The digital water-based ink comprises the following raw materials in percentage by weight: carbon black 7%, 1, 2-hexanediol 10%, naoho 0.5%, kaoho 0.2%, 2-methyl-isothiazoline 0.01%, water 75%.
The water-based gloss oil comprises the following raw materials in percentage by weight: 56% of amino modified acrylic resin emulsion, 2.5% of naphthalenesulfonic acid, 2.4% of benzenesulfonic acid, 0.1% of polyether modified siloxane and 39% of water.
A preparation method of water-based digital paint paper comprises the following steps:
(1) coating weight of 6g/m by coating group of digital printer2The digital undercoat liquid of (2) is applied to a prepreg paper 100 to form a digital undercoat layer 200, and the amount of the applied liquid is 5g/m by a digital printer2The digital water-based ink is printed on the surface to form patterns or decorative patterns, and the patterns or the decorative patterns are dried to obtain a digital printing decorative layer 300;
(2) coating the water-based varnish on printing paper, drying by hot air at 50 ℃ to obtain a protective layer 400, and rolling to obtain the paper.
Example 3
The water-based digital paint paper of the embodiment comprises a pre-impregnated backing paper 100, a digital primer 200, a digital printing decorative layer 300 and a protective layer 400 from top to bottom; the digital printing decoration layer 300 is made of digital water-based ink; the digital primer layer 200 is composed of a digital primer liquid, and the protective layer 400 is composed of water-based varnish.
The pre-impregnated backing paper has a basis weight of 70-120g/m2。
The digital base coating liquid comprises the following raw materials in percentage by weight: 10% of polyvinyl alcohol, 13% of nano silicon dioxide, 0.6% of fatty alcohol-polyoxyethylene ether, 1.4% of polyvinylpyrrolidone, 0.2% of polyvinyl alcohol ester, 0.3% of polyethyleneimine, 0.2% of ammonia water, 1% of ethylene glycol, 2% of triethylene glycol and 0.2% of benzoate.
The digital water-based ink comprises the following raw materials in percentage by weight: carbon black 8%, 1, 2-hexanediol 8%, NaOH 0.5%, KaOH0.2%, 2-methyl-isothiazoline 0.005-0.01%, water 75%.
The water-based gloss oil comprises the following raw materials in percentage by weight: 55% of amino modified acrylic resin emulsion, 2.5% of naphthalenesulfonic acid, 2.4% of benzenesulfonic acid, 0.1% of polyether modified siloxane and 40% of water.
A preparation method of water-based digital paint paper comprises the following steps:
(1) coating weight of 6g/m by coating group of digital printer2The digital undercoat liquid of (2) is applied to a prepreg paper 100 to form a digital undercoat layer 200, and the amount of the applied liquid is 5g/m by a digital printer2The digital water-based ink is printed on the surface to form patterns or decorative patterns, and the patterns or the decorative patterns are dried to obtain a digital printing decorative layer 300;
(2) coating the water-based varnish on printing paper, drying by hot air at 50 ℃ to obtain a protective layer 400, and rolling to obtain the paper.
Example 4
The water-based digital paint paper of the embodiment comprises a pre-impregnated backing paper 100, a digital primer 200, a digital printing decorative layer 300 and a protective layer 400 from top to bottom; the digital printing decoration layer 300 is made of digital water-based ink; the digital primer layer 200 is composed of a digital primer liquid, and the protective layer 400 is composed of water-based varnish.
The pre-impregnated backing paper has a basis weight of 70-120g/m2。
The digital base coating liquid comprises the following raw materials in percentage by weight: 8% of polyvinyl alcohol, 20% of nano silicon dioxide, 0.5% of fatty alcohol-polyoxyethylene ether, 1.3% of polyvinylpyrrolidone, 0.2% of polyvinyl alcohol ester, 0.3% of polyethyleneimine, 0.2% of ammonia water, 2% of ethylene glycol, 2% of triethylene glycol and 0.2% of benzoate.
The digital water-based ink comprises the following raw materials in percentage by weight: titanium dioxide 8%, 1, 2-hexanediol 8%, NaOH0.5%, KaOH0.2%, 2-methyl-isothiazoline 0.005-0.01%, and water 75%.
The water-based gloss oil comprises the following raw materials in percentage by weight: 56% of amino modified acrylic resin emulsion, 2.5% of naphthalenesulfonic acid, 2.4% of benzenesulfonic acid, 0.1% of polyether modified siloxane and 39% of water.
A preparation method of water-based digital paint paper comprises the following steps:
(1) coating weight of 6g/m by coating group of digital printer2The digital undercoat liquid of (2) is applied to a prepreg paper 100 to form a digital undercoat layer 200, and the amount of the applied liquid is 5g/m by a digital printer2The digital water-based ink is printed on the surface to form patterns or decorative patterns, and the patterns or the decorative patterns are dried to obtain a digital printing decorative layer 300;
(2) coating the water-based varnish on printing paper, drying by hot air at 50 ℃ to obtain a protective layer 400, and rolling to obtain the paper.
The result of the detection
The digital paint paper prepared in the examples 1 to 4 is tested by a detection mechanism and meets the standard limit requirements of the GB/T28995-2012 formaldehyde emission and the general performance standard required by the artificial board, as shown in Table 1.
TABLE 1
Figure BDA0002756845950000061
Figure BDA0002756845950000071
Figure BDA0002756845950000081
The foregoing detailed description of the present invention provides an aqueous digital paint paper, and its method of manufacture and use, wherein specific examples are set forth to provide an understanding of the principles and practice of the invention, the examples given being included to provide an understanding of the method and its central concept, including the best mode, and to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. The scope of the invention is defined by the claims and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they have structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims (10)

1. The water-based digital paint paper is characterized by sequentially comprising pre-impregnated backing paper, a digital bottom coating, a digital printing decorative layer and a protective layer from top to bottom; the digital printing decorative layer is made of digital water-based ink; the digital bottom coating is composed of digital bottom coating liquid, and the protective layer is composed of water-based varnish.
2. The aqueous digital paint paper as claimed in claim 1, wherein the pre-impregnated backing paper has a basis weight of 70-120g/m2。
3. The aqueous digital paint paper as claimed in claim 1, wherein the digital aqueous ink comprises the following raw materials in percentage by weight: 1-10% of pigment, 2-10% of 1, 2-hexanediol, 0-1% of NaOH, 0-1% of KaOH, 0.005-0.01% of 2-methyl-isothiazoline and 50-80% of water; the pigment is one of iron oxide red powder, permanent yellow powder, titanium dioxide, carbon black, titanium blue powder and blue powder.
4. The method for preparing aqueous digital paint paper according to any one of claims 1 to 3, characterized in that it comprises the following steps:
(1) coating the digital base coating liquid on the pre-impregnated paper through a coating group of a digital printer to form a digital base coating, printing the digital water-based ink on the surface through the digital printer to form patterns or decorative patterns, and drying to obtain a digital printing decorative layer;
(2) coating the water-based varnish on printing paper, drying by hot air, and rolling to obtain the paper.
5. The preparation method of claim 4, wherein the digital primer coating liquid comprises the following raw materials in percentage by weight: 5-10% of polyvinyl alcohol, 15-20% of nano silicon dioxide, 1-2% of dispersing agent, 0.1-0.3% of defoaming agent and 0.1-0.5% of cationic color fixing agent.
6. The preparation method of claim 5, wherein the digital primer coating liquid further comprises the following raw materials in percentage by weight: 0.15-0.2% of pH value regulator, 4-5% of humectant and 0.1-0.3% of preservative.
7. The preparation method according to claim 5, wherein the dispersing agent is fatty alcohol-polyoxyethylene ether or polyvinylpyrrolidone; the defoaming agent is polyvinyl alcohol ester or polyethylene glycol fatty acid mixture; the cationic color fixing agent is polyethyleneimine or polyvinylamine.
8. The preparation method of claim 4, wherein the aqueous gloss oil comprises the following raw materials in percentage by weight: 50-60% of amino modified acrylic resin emulsion, 4-5% of organic acid curing agent, 0-0.2% of organic silicon assistant and 30-40% of water.
9. The preparation method according to claim 8, wherein the organic acid curing agent is at least one of benzenesulfonic acid, p-toluenesulfonic acid, and naphthalenesulfonic acid; the organic silicon assistant is polyether modified siloxane or reactive modified silicon.
10. A decorative sheet, characterized in that the surface of the decorative sheet contains the aqueous digital paint paper according to any one of claims 1 to 3.
CN202011205264.2A 2020-11-02 2020-11-02 Water-based digital paint paper and preparation method and application thereof Pending CN112501943A (en)

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CN113930098A (en) * 2021-10-29 2022-01-14 广东天元汇邦新材料股份有限公司 Three-dimensional relief paint paper with aldehyde-purifying antibacterial function and preparation method thereof
CN115873168A (en) * 2022-09-26 2023-03-31 浙江联益控股有限公司 Modified acrylic emulsion for digital printing formaldehyde-free flexible decorative coated paper and application thereof
EP4212347A1 (en) * 2022-01-14 2023-07-19 SWISS KRONO Tec AG Method for producing a decorative paper
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CN113930098A (en) * 2021-10-29 2022-01-14 广东天元汇邦新材料股份有限公司 Three-dimensional relief paint paper with aldehyde-purifying antibacterial function and preparation method thereof
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CN117947660A (en) * 2024-03-26 2024-04-30 山东东宇鸿翔装饰材料有限公司 Aldehyde-free facing paper and manufacturing process thereof
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