CN108203894B - Emulsion type coating coated paper and processing method thereof - Google Patents
Emulsion type coating coated paper and processing method thereof Download PDFInfo
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- CN108203894B CN108203894B CN201711476032.9A CN201711476032A CN108203894B CN 108203894 B CN108203894 B CN 108203894B CN 201711476032 A CN201711476032 A CN 201711476032A CN 108203894 B CN108203894 B CN 108203894B
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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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
- 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
- D21H19/24—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
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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
- D21H19/84—Paper comprising more than one coating on both sides of the substrate
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/12—Coating on the layer surface on paper layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
- B32B2307/7145—Rot proof, resistant to bacteria, mildew, mould, fungi
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1811—C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate
Abstract
The application provides emulsion type coating coated paper and a processing method thereof, the emulsion type coating coated paper comprises paper and a coating layer coated on the surface of the paper, wherein the coating of the coating layer is mainly prepared from the following raw materials in parts by mass: 10-40 parts of acrylic acid polymerization monomer, 5-15 parts of protective adhesive, 0.1-5 parts of phosphate ester emulsifier, 0.1-5 parts of initiator, 0.1-2 parts of accelerator and 30-70 parts of water. According to the emulsion type coating coated paper, the initiator and the accelerator are added into the coating of the coating layer, and under the synergistic effect of the protective glue, the phosphate ester emulsifier can better participate in the polymerization of the acrylic acid polymerization monomer, so that a compact glue layer is formed between the paper and the aluminum layer, the insufficient adhesive force caused by gaps or poor contact is reduced, and the adhesive force of the paper to the aluminum layer is effectively improved.
Description
Technical Field
The invention relates to the technical field of coated paper, in particular to emulsion type coating coated paper and a processing method thereof.
Background
At present, the application scale of laser image-text packaging paper is gradually enlarged, and bright and colorful patterns of the laser image-text packaging paper are more and more popular with people particularly on packages such as cigarette packets, wine labels and the like.
The laser graph-text packaging paper is generally manufactured according to the following steps: (1) manufacturing a transfer film: coating a release film pressing material on the plastic film to form a mould pressing layer, and then, mould-pressing laser pictures and texts on the mould pressing layer to form a transfer film with the laser pictures and texts; the laser graphic information can be directly molded on the plastic film without coating a molding layer by improving the plastic film, so that a transfer film molded with the laser graphic is formed; (2) aluminum plating: plating an aluminum layer on the mould pressing layer, or plating an aluminum layer on the surface of the plastic film on which the laser pictures and texts are pressed; (3) attaching and transferring: the coiled transfer film plated with the aluminum layer is placed on an unreeling device, the transfer film is attached to paper coated with an adhesive in advance through an attaching device, the aluminum layer is adhered to the adhesive, the adhesive is solidified, then the plastic film is peeled off through a peeling device, and the peeled plastic film is rolled through a rolling device, so that the aluminum layer (or the aluminum layer and the mould pressing layer) and the laser pictures and texts on the aluminum layer are transferred to the paper, the attachment transfer of the laser pictures and texts is realized, and the transfer aluminized paper is obtained.
The manufacturing process shows that the adhesive force between the aluminum layer and the paper directly influences the quality of the laser graphic packaging paper. Therefore, the development of a coated paper having a strong adhesion to an aluminum layer has been a hot spot of research.
Disclosure of Invention
In view of the above, there is a need for an emulsion-type coating paper having strong adhesion to an aluminum layer.
In addition, the application also provides a processing method of the emulsion type coating coated paper.
The emulsion type coating coated paper comprises paper and a coating layer coated on the surface of the paper, wherein the coating of the coating layer is mainly prepared from the following raw materials in parts by mass:
in one embodiment, the acrylic polymeric monomer is selected from at least one of acrylic acid, methyl acrylate, butyl acrylate, hydroxyethyl acrylate, isooctyl acrylate, isobornyl acrylate, and isobornyl methacrylate.
In one embodiment, the protective adhesive is polyvinyl alcohol, the polymerization degree of the polyvinyl alcohol is 1700, and the alcoholysis degree of the polyvinyl alcohol is 88%.
In one embodiment, the phosphate ester emulsifier is laureth phosphate, isooctanol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate or isotridecyl alcohol ether phosphate.
In one embodiment, the initiator is selected from at least one of potassium persulfate, sodium persulfate, and ammonium persulfate.
In one embodiment, the promoter is a vicinal diol at the 1,2 positions of a C4-C8 linear alkyl group.
A processing method of the emulsion type coating coated paper comprises the following steps:
providing raw materials in a coating formula of the coating layer;
mixing an acrylic acid polymerization monomer and a phosphate ester emulsifier to obtain a mixed solution;
heating water to 75-95 ℃, adding the protective glue, and stirring until the protective glue is completely dissolved to obtain a protective glue solution;
dripping the mixed solution, the initiator and the accelerator into the protective glue solution at the same time, carrying out heat preservation reaction at the temperature of 75-95 ℃ for 1-2 hours, cooling, and discharging to obtain the coating;
and coating the surface of the paper by adopting the coating to obtain the emulsion type coating paper.
In one embodiment, the step of coating the surface of the paper with the coating to obtain the emulsion type coating paper specifically comprises the following steps:
after the paper is unreeled, respectively coating the front side and the back side of the paper by adopting the coating, and drying to obtain base paper;
after the film is unreeled, the film is rubberized to obtain a coating film;
attaching the coating film and the base paper to obtain composite paper;
and (3) varnishing the composite paper, drying, cooling and rolling to obtain the emulsion type coating paper.
In one embodiment, the coating is applied in an amount of 4.5g/m2～5.5g/m2(ii) a The sizing amount of the film is 5.5g/m2～6.0g/m2。
In one embodiment, in the step of drying to obtain the base paper, the drying temperature is 80-110 ℃; and in the step of drying the composite paper after varnishing, the drying temperature is 80-120 ℃.
According to the emulsion type coating coated paper, the initiator and the accelerator are added into the coating of the coating layer, and under the synergistic effect of the protective glue, the phosphate ester emulsifier can better participate in the polymerization of the acrylic acid polymerization monomer, so that a compact glue layer is formed between the paper and the aluminum layer, and the adhesive force of the paper to the aluminum layer is effectively improved.
In addition, the 1, 2-position vicinal diol of the linear alkyl of the accelerators C4-C8 also has the effects of corrosion prevention and sterilization, so that the emulsion type coating paper can be stored for a long time without mildewing.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The emulsion type coating coated paper of an embodiment comprises paper and a coating layer coated on the surface of the paper.
The coating of the coating layer is mainly prepared from the following raw materials in parts by mass: 10-40 parts of acrylic acid polymerization monomer, 5-15 parts of protective adhesive, 0.1-5 parts of phosphate ester emulsifier, 0.1-5 parts of initiator, 0.1-2 parts of accelerator and 30-70 parts of water.
Preferably, the coating of the coating layer is prepared from the following raw materials in parts by mass: 20-30 parts of acrylic acid polymerization monomer, 6-10 parts of protective adhesive, 0.5-2 parts of phosphate ester emulsifier, 0.5-2 parts of initiator, 0.5-1 part of accelerator and 40-60 parts of water.
Wherein the acrylic polymer monomer is at least one selected from acrylic acid, methyl acrylate, butyl acrylate, hydroxyethyl acrylate, isooctyl acrylate, isobornyl acrylate and isobornyl methacrylate.
Further, the protective adhesive is polyvinyl alcohol, and the degree of polymerization and the degree of alcoholysis of the polyvinyl alcohol are 1700 and 88% (marked as PVA 1788).
Specifically, the phosphate ester emulsifier is lauryl alcohol ether phosphate, isooctanol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate or isomeric tridecanol ether phosphate.
Further, the initiator is at least one selected from the group consisting of potassium persulfate, sodium persulfate, and ammonium persulfate.
Further, the accelerant is 1, 2-position vicinal diol of C4-C8 straight-chain alkyl.
In the present embodiment, the accelerator is at least one selected from the group consisting of 1, 2-butanediol, 1, 2-pentanediol, and 1, 2-hexanediol.
Preferably, the promoter is a combination of 1, 2-butanediol and 1, 2-hexanediol, and the mass ratio of the 1, 2-butanediol to the 1, 2-hexanediol in the promoter is 1-2: 1.
according to the emulsion type coating coated paper, the initiator and the accelerator are added into the coating of the coating layer, and under the synergistic effect of the protective glue, the phosphate ester emulsifier can better participate in the polymerization of the acrylic acid polymerization monomer, so that a compact glue layer is formed between the paper and the aluminum layer, the insufficient adhesive force caused by gaps or poor contact is reduced, and the adhesive force of the paper to the aluminum layer is effectively improved.
Meanwhile, the acrylic acid polymerization monomer selects isooctyl acrylate and hydroxyethyl acrylate with good flexibility, so that the coating has good bonding force and flexibility, and the folding resistance of paper is ensured.
In addition, the 1, 2-position vicinal diol of the linear alkyl of the accelerators C4-C8 also has the effects of corrosion prevention and sterilization, so that the emulsion type coating paper can be stored for a long time without mildewing.
It should be noted that the emulsion paint coated paper is not limited to the above-described structure, and in other embodiments, the emulsion paint coated paper may further include other structures such as a film layer and a varnish layer.
The processing method of the emulsion type coating coated paper comprises the following steps S110-S150:
s110, providing 10-40 parts by mass of an acrylic polymerization monomer, 5-15 parts by mass of a protective adhesive, 0.1-5 parts by mass of a phosphate ester emulsifier, 0.1-5 parts by mass of an initiator, 0.1-2 parts by mass of an accelerator and 30-70 parts by mass of water.
Wherein the acrylic polymer monomer is at least one selected from acrylic acid, methyl acrylate, butyl acrylate, hydroxyethyl acrylate, isooctyl acrylate, isobornyl acrylate and isobornyl methacrylate.
Specifically, the phosphate ester emulsifier is lauryl alcohol ether phosphate, isooctanol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate or isomeric tridecanol ether phosphate.
The phosphate ester emulsifier has good binding force to the aluminum layer or the metal layer.
Further, the protective adhesive is polyvinyl alcohol. The degree of polymerization of the polyvinyl alcohol was 1700, and the degree of alcoholysis was 88%.
Further, the initiator is at least one selected from the group consisting of potassium persulfate, sodium persulfate, and ammonium persulfate.
Further, the accelerant is 1, 2-position vicinal diol of C4-C8 straight-chain alkyl.
In the present embodiment, the accelerator is at least one selected from the group consisting of 1, 2-butanediol, 1, 2-pentanediol, and 1, 2-hexanediol.
Preferably, the promoter is a combination of 1, 2-butanediol and 1, 2-hexanediol, and the mass ratio of the 1, 2-butanediol to the 1, 2-hexanediol in the promoter is 1-2: 1.
s120, mixing an acrylic acid polymerization monomer and a phosphate ester emulsifier to obtain a mixed solution;
s130, heating water to 75-95 ℃, adding the protective glue, and stirring until the protective glue is completely dissolved to obtain a protective glue solution;
s140, simultaneously dripping the mixed solution, the initiator and the accelerator into the protective glue solution, carrying out heat preservation reaction at the temperature of 75-95 ℃ for 1-2 hours, cooling, and discharging to obtain the coating.
Preferably, the dropping time of the mixed solution, the initiator or the accelerator is 1.5 to 2.5 hours.
The mixed solution, the initiator and the accelerator are simultaneously dropped into the protective glue solution, so that the phosphate ester emulsifier can participate in the polymerization of the acrylic acid polymerization monomer more quickly, and the film forming speed is accelerated.
S150, coating the surface of the paper by adopting the coating to obtain the emulsion type coating paper.
Preferably, step S150 specifically includes the following steps S1501 to S1504:
s1501, after the paper is unreeled, respectively coating the front side and the back side of the paper with the coatings, and drying to obtain the base paper.
Wherein the coating amount of the coating is 4.5g/m2～5.5g/m2。
In the step of drying to obtain the base paper, the drying temperature is 80-110 ℃.
The front and the back of the paper are coated with the coating respectively, and the coating forms a compact adhesive layer on the surface of the paper, so that the adhesive force of the paper to an aluminum layer can be effectively improved.
In addition, the coating contains a large amount of moisture, and when the coating is coated on the surface of paper, the humidity of the paper can be increased, and the phenomenon that the performance of the product is influenced due to the warping caused by the loss of the moisture of the paper in the subsequent process is avoided.
S1502, after the film is unreeled, the film is subjected to gluing treatment to obtain a coating film.
Wherein the sizing amount of the film is 5.5g/m2～6.0g/m2。
In this embodiment, the coating film is a transfer film plated with an aluminum layer.
It will be understood that the glue used to size the film can be any glue that corresponds to the requirements of the product.
S1503, the coated film is laminated to a base paper to obtain a composite paper.
S1504, after the composite paper is varnished, drying, cooling and rolling are carried out, and the emulsion type coating paper is obtained.
Wherein, in the step of drying the composite paper after varnishing, the drying temperature is 80-120 ℃.
According to the processing method of the emulsion type coating coated paper, the coating capable of forming a compact glue layer on the surface of the paper is coated on the surface of the paper, so that the adhesive force between the paper and the aluminum layer can be effectively improved.
In addition, the emulsion type coating coated paper can be stored for a long time without mildewing, and has good flexibility and higher folding resistance.
The following are specific examples.
Example 1
(1) Providing the paint of the paint layer:
5kg of acrylic acid, 5kg of methyl acrylate, 5kg of butyl acrylate, 5kg of isooctyl acrylate, 5kg of isobornyl methacrylate and 0.1kg of nonylphenol polyoxyethylene ether phosphate were mixed to obtain a mixed solution.
Heating 30kg of water to 75 ℃, adding 5kg of PVA1788, and stirring until the PVA is completely dissolved to obtain the protective glue solution.
And (3) simultaneously dripping the mixed solution, 0.1kg of potassium persulfate and 0.1kg of 1, 2-butanediol into the protective glue solution, carrying out heat preservation reaction at 75 ℃ for 1 hour, cooling, and discharging to obtain the coating.
(2) After the paper is unreeled, the front and the back of the paper are respectively coated with the coating (the coating amount is 5 g/m)2) And drying at 100 ℃ to obtain the base paper.
(3) After the film is unreeled, the film is rubberized (the rubberizing amount of the film is 5.5 g/m)2) And obtaining the coating film.
(4) And (3) after the coating film is attached to the base paper, applying varnish, drying at 110 ℃, cooling and rolling to obtain the emulsion type coating paper.
The emulsion type coating paper prepared in example 1 was pulled with a 3M tape, and the aluminum layer did not come off and was not cracked when folded in half. After the paper coated with the emulsion type coating is stored for six months, no mildew stains are found on the surface of the paper.
Comparative example 1
Comparative example 1 is essentially the same as example 1 except that the emulsifier used in comparative example 1 is nonylphenol polyoxyethylene ether.
The emulsion type coating paper prepared in comparative example 1 was pulled with a 3M adhesive tape, and the aluminum layer was completely peeled off and cracked by folding in two. After the coated paper is stored for six months, no mildew stains are found on the surface of the paper.
Comparative example 2
Comparative example 2 is essentially the same as example 1 except that comparative example 2 is not protected with a protective gum.
The emulsion type coating paper prepared in comparative example 2 was pulled with 3M tape, and the aluminum layer was partially peeled off and cracked by folding in half. After the coated paper is stored for six months, no mildew stains are found on the surface of the paper.
Comparative example 3
Comparative example 3 is essentially the same as example 1 except that comparative example 3 is devoid of added accelerator.
The emulsion type coating paper prepared in comparative example 3 was pulled with 3M tape, and the aluminum layer was partially peeled off and cracked by folding in half. After the paper is stored for six months, mildew stains can be seen on the surface of the paper.
Example 2
(1) Providing the paint of the paint layer:
8kg of acrylic acid, 8kg of methyl acrylate, 8kg of butyl acrylate, 8kg of isobornyl methacrylate and 5kg of isooctyl alcohol polyoxyethylene ether phosphate were mixed to obtain a mixed solution.
And heating 70kg of water to 95 ℃, adding 15kg of PVA1788, and stirring until the PVA is completely dissolved to obtain the protective glue solution.
And (3) simultaneously dripping the mixed solution, 5kg of sodium persulfate, 1kg of 1, 2-butanediol and 1kg of 1, 2-hexanediol into the protective glue solution, carrying out heat preservation reaction at 95 ℃ for 2 hours, cooling, and discharging to obtain the coating.
(2) After the paper is unreeled, the front and the back of the paper are respectively coated with the coating (the coating amount is 5.5 g/m)2) And drying at 110 ℃ to obtain the base paper.
(3) After the film is unreeled, the film is rubberized (the rubberizing amount of the film is 6.0 g/m)2) And obtaining the coating film.
(4) And (3) after the coating film is attached to the base paper, applying varnish, drying at 120 ℃, cooling and rolling to obtain the emulsion type coating paper.
The emulsion type coating paper prepared in example 2 was pulled with 3M tape, and the aluminum layer did not come off and was not cracked when folded in half. After the coated paper is stored for six months, no mildew stains are found on the surface of the paper.
Example 3
(1) Providing the paint of the paint layer:
2kg of acrylic acid, 2kg of methyl acrylate, 2kg of butyl acrylate, 2kg of hydroxyethyl acrylate, 2kg of isobornyl methacrylate and 5kg of lauryl alcohol ether phosphate were mixed to obtain a mixed solution.
And heating 50kg of water to 80 ℃, adding 10kg of PVA1788, and stirring until the PVA is completely dissolved to obtain the protective glue solution.
And (3) simultaneously dripping the mixed solution, 2kg of ammonium persulfate and 2kg of 1, 2-hexanediol into the protective glue solution, reacting for 1.5 hours at the temperature of 80 ℃, cooling, and discharging to obtain the coating.
(2) After the paper is unreeled, the front and the back of the paper are respectively coated with the coating (the coating amount is 4.5 g/m)2) And drying at 80 ℃ to obtain the base paper.
(3) After the film is unreeled, the film is rubberized (the rubberizing amount of the film is 5.5 g/m)2) And obtaining the coating film.
(4) And (3) after the coating film is attached to the base paper, applying varnish, drying at 90 ℃, cooling and rolling to obtain the emulsion type coating paper.
The emulsion type coating paper prepared in example 3 was pulled with 3M tape, and the aluminum layer did not come off and was not cracked when folded in half. After the coated paper is stored for six months, no mildew stains are found on the surface of the paper.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The emulsion type coating coated paper is characterized by comprising paper and a coating layer coated on the surface of the paper, wherein the coating of the coating layer is mainly prepared from the following raw materials in parts by mass:
10-40 parts of an acrylic polymerized monomer;
5-15 parts of protective adhesive;
0.1-5 parts of phosphate ester emulsifier;
0.1-5 parts of an initiator;
0.1-2 parts of an accelerator;
30-70 parts of water;
the accelerant is selected from 1, 2-butanediol, 1, 2-hexanediol or a mixture of 1: 1, 2-butanediol and 1, 2-hexanediol.
2. An emulsion-type coating-coated paper according to claim 1, wherein the acrylic polymer monomer is at least one selected from acrylic acid, methyl acrylate, butyl acrylate, hydroxyethyl acrylate, isooctyl acrylate, isobornyl acrylate and isobornyl methacrylate.
3. An emulsion type coating material coated paper according to claim 1 or 2, wherein the protective adhesive is polyvinyl alcohol, the degree of polymerization of the polyvinyl alcohol is 1700, and the degree of alcoholysis of the polyvinyl alcohol is 88%.
4. An emulsion-type coating-coated paper according to claim 1 or 2, wherein the phosphate-based emulsifier is a lauryl alcohol ether phosphate, isooctanol polyoxyethylene ether phosphate, nonylphenol polyoxyethylene ether phosphate or isotridecyl alcohol phosphate.
5. An emulsion-type paint-coated paper according to claim 1 or 2, wherein the initiator is selected from at least one of potassium persulfate, sodium persulfate and ammonium persulfate.
6. An emulsion type coating paper according to claim 1 or 2, characterized in that the coating of the coating layer is prepared from the following raw materials in parts by mass: 20-30 parts of acrylic acid polymerization monomer, 6-10 parts of protective adhesive, 0.5-2 parts of phosphate ester emulsifier, 0.5-2 parts of initiator, 0.5-1 part of accelerator and 40-60 parts of water.
7. A method for processing emulsion coating paper according to any one of claims 1 to 6, comprising the following steps:
providing raw materials in a coating formula of the coating layer;
mixing an acrylic acid polymerization monomer and a phosphate ester emulsifier to obtain a mixed solution;
heating water to 75-95 ℃, adding the protective glue, and stirring until the protective glue is completely dissolved to obtain a protective glue solution;
simultaneously dripping the mixed solution, the initiator and the accelerator into the protective glue solution, carrying out heat preservation reaction at the temperature of 75-95 ℃ for 1-2 hours, cooling, and discharging to obtain the coating;
and coating the surface of the paper by adopting the coating to obtain the emulsion type coating paper.
8. The method for processing the emulsion type coating paper according to claim 7, wherein the step of coating the surface of the paper with the coating to obtain the emulsion type coating paper comprises the following steps:
after the paper is unreeled, respectively coating the front side and the back side of the paper by adopting the coating, and drying to obtain base paper;
after the film is unreeled, the film is rubberized to obtain a coating film;
attaching the coating film and the base paper to obtain composite paper;
and (3) varnishing the composite paper, drying, cooling and rolling to obtain the emulsion type coating paper.
9. A process for preparing an emulsion paint coated paper as claimed in claim 8, wherein the coating is applied in an amount of 4.5g/m2~5.5g/m2(ii) a The sizing amount of the film is 5.5g/m2~6.0 g/m2。
10. The processing method of emulsion type coating coated paper according to claim 8, wherein in the step of drying to obtain base paper, the drying temperature is 80-110 ℃; and in the step of drying the composite paper after varnishing, the drying temperature is 80-120 ℃.
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| CN101499546A (en) * | 2009-02-10 | 2009-08-05 | 铁岭宝众新能源汽车有限公司 | Temperature keeping accumulator |
| CN103740251A (en) * | 2013-12-17 | 2014-04-23 | 张家港康得新光电材料有限公司 | High-adhesion aqueous coating liquid for optical polyester film |
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| CN102690617A (en) * | 2011-03-21 | 2012-09-26 | 四维精密材料股份有限公司 | Emulsification-type pressure-sensitive adhesive with water resistance and albino performance and application thereof |
| CN203429507U (en) * | 2013-07-30 | 2014-02-12 | 上海紫江喷铝包装材料有限公司 | Holographic anti-fake composite paper |
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| CN103740251A (en) * | 2013-12-17 | 2014-04-23 | 张家港康得新光电材料有限公司 | High-adhesion aqueous coating liquid for optical polyester film |
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