CN113737571A - Preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance - Google Patents
Preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance Download PDFInfo
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- CN113737571A CN113737571A CN202110925295.3A CN202110925295A CN113737571A CN 113737571 A CN113737571 A CN 113737571A CN 202110925295 A CN202110925295 A CN 202110925295A CN 113737571 A CN113737571 A CN 113737571A
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- acrylic acid
- paper base
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other 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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/22—Proteins
-
- 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
- D21H17/36—Polyalkenyalcohols; 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
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/80—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
- 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
-
- 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
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
The invention belongs to the technical field of paper manufacturing, relates to barrier paper, and particularly relates to a preparation method of a sustainable high-barrier paper base material with enhanced moisture and oxygen resistance, which comprises the following steps: preparing an acrylic acid solution with solid content of 48.5 +/-1 wt%; adding modified ZnO to obtain a modified acrylic acid solution; preparing 5-15% of PVA solution and 5-10% of zein solution; and sequentially coating the modified acrylic acid solution, the PVA solution and the zein solution on the surface of the paper base at 45-55 ℃ to form a coating, coating the modified acrylic acid solution on the back, and drying each coating for 15-30 min at 50-60 ℃ to obtain the paper base. The preparation method is simple in preparation process, kraft paper material with extremely poor barrier property is prepared into sustainable high-barrier paper base material with enhanced moisture and oxygen barrier property by simply coating and drying the surface of the paper base, so that the food safety regulation is met, the use cost is reduced, and the kraft paper base material can be naturally degraded, becomes environment-friendly green packaging material, and is expected to be further popularized and applied.
Description
Technical Field
The invention belongs to the technical field of paper manufacturing, relates to barrier paper, and particularly relates to a preparation method of a sustainable high-barrier paper base material with enhanced moisture and oxygen resistance.
Background
Under the background that the green development is promoted to the national strategy, the green package inherits the principles of development reduction, degradability, repeated use, recycling and the like, and the natural trend that the traditional package is replaced to the development of the packaging industry is formed. Paper-based materials, mainly packaging materials made of paper or paperboard, are gradually replacing traditional packaging materials such as plastics in the food packaging field and the logistics transportation field at present due to the advantages of renewable raw materials, convenient recycling and the like. Currently, improvement of water vapor barrier property and oxygen barrier property has become a focus of research in the field of packaging.
The Acrylic Acid (AA) coating has the characteristics of excellent drying property, simple synthesis and preparation, good alkali resistance and aging resistance, excellent light and color retention and the like, is an important unsaturated organic acid in industrial production, and has wide application prospect in the fields of corrosion prevention, decoration, antifouling, building, water prevention and the like. However, the single acrylic paint has the defects of large brittleness, poor adhesion, poor impact resistance, insufficient heat resistance and the like of a paint film.
Polyvinyl alcohol (PVA) is an eco-friendly organic polymer material which is easily soluble in water and biodegradable, and is commonly used in the technical fields of optical films, degradable protective clothing, pervaporation separation membranes and the like. The molecular chain of PVA contains a large amount of hydroxyl groups, and the PVA film is soluble in water, so that the PVA film has poor water resistance and mechanical property.
The present invention aims to improve the storage quality and shelf life of food by organically combining edible, degradable materials with paper-based materials.
Disclosure of Invention
In view of the above-mentioned shortcomings in the prior art, the present invention aims to provide a method for preparing sustainable high-barrier paper-based material with enhanced moisture and oxygen resistance.
A preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance performance comprises the following steps:
1) preparing an acrylic acid solution with solid content of 48.5 +/-1 wt%, preferably 48.5%;
2) adding modified nano ZnO, and ultrasonically stirring until nano particles are uniformly suspended in an acrylic acid solution to obtain the modified acrylic acid solution, wherein the concentration of the modified nano ZnO is 1-2% of the solid content of the acrylic acid solution;
3) weighing dry polyvinyl alcohol powder, dissolving the powder in distilled water, swelling in cold water for 3-5 h, heating to 85-95 ℃, and dissolving for 3-5 h to prepare 5-15% polyvinyl alcohol solution;
4) preparing a zein solution with the mass percentage concentration of 5-10% by using absolute ethyl alcohol;
5) uniformly soaking the paper base in a 45-55 ℃ modified acrylic acid solution, taking out and drying, sequentially coating 2-4 g of zein solution, 2-4 g of polyvinyl alcohol solution and 2-4 g of acrylic acid solution on the surface of a single paper base, coating 1-2 g of modified acrylic acid solution on the back of the paper base, and drying each coating at 50-60 ℃ for 15-30 min to obtain the paper base.
In a preferred embodiment of the present invention, the acrylic emulsion in step 1) was obtained from Korea, model RX-20.
In a preferred embodiment of the invention, the modified nano ZnO in the step 2) is prepared by ball-milling nano ZnO particles for 1 hour, and then dropwise adding KH570 with the mass percentage concentration of 4% and uniformly mixing.
In the better disclosed embodiment of the invention, the paper base in the step 5) is kraft paper, the A4 breadth is 60-90 mu m in thickness.
The sustainable high-barrier paper base material with the enhanced moisture and oxygen resistance performance prepared by the method is formed by compounding a paper base and a coating film layer on the surface of the paper base, wherein the coating film layer sequentially comprises a modified acrylic acid coating film layer, a zein coating film layer, a polyvinyl alcohol coating film layer and an acrylic acid coating film layer, and the back of the paper base is the modified acrylic acid coating film layer.
The high-barrier paper prepared by the invention is detected to have improved oxygen transmission rate and water vapor transmission rate compared with the base paper (kraft paper) under the environment of 38 ℃ and 90% humidity.
Advantageous effects
The invention effectively combines the edible and degradable materials with the paper-based material, thereby improving the storage quality and shelf life of the food. The preparation method is simple in preparation process, the environment-friendly coating solution is adopted to simply coat and dry the surface of the paper base, and the kraft paper material with extremely poor barrier property is prepared into the sustainable high-barrier paper base material with enhanced moisture and oxygen barrier properties, so that the food safety regulation is met, the use cost is reduced, and the kraft paper base material can be naturally degraded, becomes an environment-friendly green packaging material, and is expected to be further popularized and applied.
Detailed Description
The present invention will be described in detail below with reference to examples to enable those skilled in the art to better understand the present invention, but the present invention is not limited to the following examples.
The paper-based sustainable high-barrier material consists of kraft paper and a composite coating layer, wherein the coating layer sequentially comprises a modified acrylic acid coating layer, a zein coating layer, a polyvinyl alcohol coating layer and an acrylic acid coating layer, and the back of the paper-based sustainable high-barrier material is the modified acrylic acid coating layer.
The preparation method comprises the following steps:
an acrylic coating layer prepared by using the Korea acrylic emulsion (RX-20) has solid content of 48.5 percent;
adding modified nano ZnO, and ultrasonically stirring until nano particles are uniformly suspended in an acrylic acid solution to obtain the modified acrylic acid solution, wherein the concentration of the modified nano ZnO is 1.5% of the solid content of the acrylic acid solution;
dissolving 50g of polyvinyl alcohol powder in 450mL of distilled water, swelling for 4h by cold water, dissolving for 4h at 95 ℃ to prepare 10% of PVA coating solution, and sealing for later use;
preparing zein solution with the mass percentage concentration of 8% by using absolute ethyl alcohol;
kraft paper with the thickness of 63 mu m is taken as a paper base, the components listed in the following table are coated at 50 ℃, and the performances of the obtained sustainable high-barrier paper base material with the enhanced moisture and oxygen resistance are shown in the following table.
TABLE 1
The above results show that the paper-based material that improves the quality of the acrylic coating layer has a relatively high moisture barrier property, and the PVA coating improves the oxygen barrier property of the paper-based material.
In this embodiment, kraft paper is used as a base material, and the degradable material is combined to prepare a high-barrier food packaging film, so as to illustrate the technical scheme and effects of the present invention.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (6)
1. A preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance is characterized by comprising the following steps:
1) preparing an acrylic acid solution with solid content of 48.5 +/-1 wt%;
2) adding modified nano ZnO, and ultrasonically stirring until nano particles are uniformly suspended in an acrylic acid solution to obtain the modified acrylic acid solution, wherein the concentration of the modified nano ZnO is 1-2% of the solid content of the acrylic acid solution;
3) weighing dry polyvinyl alcohol powder, dissolving the powder in distilled water, swelling in cold water for 3-5 h, heating to 85-95 ℃, and dissolving for 3-5 h to prepare 5-15% polyvinyl alcohol solution;
4) preparing a zein solution with the mass percentage concentration of 5-10% by using absolute ethyl alcohol;
5) uniformly soaking the paper base in a 45-55 ℃ modified acrylic acid solution, taking out and drying, sequentially coating 2-4 g of zein solution, 2-4 g of polyvinyl alcohol solution and 2-4 g of acrylic acid solution on the surface of a single paper base, coating 1-2 g of modified acrylic acid solution on the back of the paper base, and drying each coating at 50-60 ℃ for 15-30 min to obtain the paper base.
2. The method for preparing sustainable high barrier paper-based material with enhanced moisture and oxygen barrier properties as claimed in claim 1, wherein: the acrylic acid solution in step 1) had a solids content of 48.5%.
3. The method for preparing sustainable high barrier paper-based material with enhanced moisture and oxygen barrier properties as claimed in claim 1, wherein: the modified nano ZnO in the step 2) is prepared by ball-milling nano ZnO particles for 1h, dripping KH570 with the mass percentage concentration of 4% and uniformly mixing.
4. The method for preparing sustainable high barrier paper-based material with enhanced moisture and oxygen barrier properties as claimed in claim 1, wherein: and 5) the paper base is kraft paper, the A4 breadth is obtained, and the thickness is 60-90 mu m.
5. A sustainable high barrier paper based material with enhanced moisture and oxygen barrier properties made by the method of any one of claims 1 to 4.
6. The sustainable high-barrier paper-based material with enhanced moisture and oxygen barrier properties according to claim 5, which is compounded by a paper base and a coating layer on the surface of the paper base, and is characterized in that: the coating layers are sequentially a modified acrylic acid coating layer, a zein coating layer, a polyvinyl alcohol coating layer and an acrylic acid coating layer, and the back of the paper base is the modified acrylic acid coating layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110925295.3A CN113737571A (en) | 2021-08-12 | 2021-08-12 | Preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance |
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| CN202110925295.3A CN113737571A (en) | 2021-08-12 | 2021-08-12 | Preparation method of sustainable high-barrier paper base material with enhanced moisture and oxygen resistance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114934406A (en) * | 2022-06-16 | 2022-08-23 | 佛山南海力豪包装有限公司 | Preparation process of paper barrier material |
| CN116411483A (en) * | 2021-12-31 | 2023-07-11 | 东莞市锐泽创艺新材料有限公司 | Moisture-proof oxygen-proof environment-friendly packaging paper and preparation method thereof |
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| CN104387604A (en) * | 2014-12-02 | 2015-03-04 | 河南工业大学 | High-moisture-resistance biodegradable zein film material and preparation method thereof |
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| CN111978893A (en) * | 2020-08-25 | 2020-11-24 | 东莞市中冠标签材料有限公司 | Acrylate adhesive, preparation method thereof and application thereof in label paper |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116411483A (en) * | 2021-12-31 | 2023-07-11 | 东莞市锐泽创艺新材料有限公司 | Moisture-proof oxygen-proof environment-friendly packaging paper and preparation method thereof |
| CN114934406A (en) * | 2022-06-16 | 2022-08-23 | 佛山南海力豪包装有限公司 | Preparation process of paper barrier material |
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Application publication date: 20211203 |