CN106065544A - A kind of paper products coating material - Google Patents
A kind of paper products coating material Download PDFInfo
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- CN106065544A CN106065544A CN201610435355.2A CN201610435355A CN106065544A CN 106065544 A CN106065544 A CN 106065544A CN 201610435355 A CN201610435355 A CN 201610435355A CN 106065544 A CN106065544 A CN 106065544A
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- paper products
- oil
- solution
- coating material
- acid
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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
- D21H19/36—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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08H—DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
- C08H1/00—Macromolecular products derived from proteins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
-
- 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
-
- 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
- D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- 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
- D21H21/06—Paper forming aids
- D21H21/12—Defoamers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2389/00—Characterised by the use of proteins; Derivatives thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of paper products coating material, with galapectite, Palygorskite and kaolinite as filler, utilize its porous to be immersed in wherein by plants essential oil, it is possible to make plants essential oil slowly discharge；And they to have viscosity, plasticity and preferably suspension time wet good, can effectively prevent coating precipitation, layering；By making it be become hydrophobicity by hydrophilic Soybean Protein Modification in the present invention, thus strengthen the water resistance of coating, then by crosslinking with glutaraldehyde, chain extension is carried out by adding chain extender, soybean protein is made to be internally formed more complicated network structure, the barrier property of paper products can be strengthened after increasing cohesiveness and the toughness of soybean protein, the modified soy-bean protein obtained and polydactyl acid mixing.
Description
Technical field
The present invention relates to a kind of coating material, a kind of for paper products to strengthen the resistance of paper products
Coating material every property.
Background technology
Packaging material are it is generally required to have good mechanical performance, barrier property, recuperability or biodegradable.Mesh
Before, topmost packaging material are paper and plastics, but paper has hygroscopicity and porous, and after making moist, intensity reduces, and barrier is poor.
These shortcomings limit paper material application on some packagings for foodstuff, barrier packaging.The block-water performance of wrapping paper is bad, dry
Dry product will absorb Environmental Water can cause losing fragility, and vegetable and fruit dry out and can cause shrivelled, atrophy, cold
Freeze or chilled food dries out and also can cause quality problems；The gas barrier properties of wrapping paper is bad, and food can irreversibly be inhaled
Receive oxygen and cause the permanent change of food quality, be exposed in oxygen cause fat oxidation to become sour or water fruits and vegetables enzyme
Promoting brown stain, some wrapping paper can absorb moisture in high humidity environment and expand, resulting in more loose structure, thus enter
One step loses oxygen obstruction, it addition, paper base material typically requires has certain grease proofness, to prevent the oils and fats in food outside
Migrate, affect packaging external appearance；Generally for the article that protection is packaged, extend the shelf-life of food, prevent thing in Packaging Engineering
Product lose, and can improve wrapping paper barrier property by using specific coating, additive or sizing agent.
Native protein adhesive has the features such as abundant raw material, low price, hot pressing, free from extraneous odour, is suitable for manufacturing food
Packaging material, as a kind of adhesive, containing substantial amounts of hydroxyl and amino in soybean protein, this two classes group is dissolved in especially
Water so that soy protein adhesives has the shortcoming of poor water resistance, and uses hydrogen in the formula of traditional soybean albumen adhesive
Calcium oxide, sodium silicate, these substance modification soybean proteins only can improve dry strength, and substantial amounts of hydroxyl and amino are not destroyed,
Hydroxyl and amino group dissolution under the effect of water, thus have impact on the quality of product, traditional method prepares modified soy-bean protein
Glue, is to be modified soybean protein merely and separate, uses adhesive prepared by the method, and water resistance is the most undesirable, deposits
And the not problem such as corrosion resistant low in wet strength.
Polylactic acid is a kind of biopolymer, has renewable, biodegradable a, nonirritant, and good water resistance is plastic
Property the feature such as good and easy machine-shaping, by coat on Paper or cardboard poly-lactic acid material alternative now widely used can not
Degradable polyethylene coating paper.
Summary of the invention
The deficiency existed for prior art, it is an object of the invention to provide a kind of paper products coating material, can increase
The barrier property of strong paper products and there is antibacterial functions.
For achieving the above object, the technical scheme is that a kind of paper products coating material, its feature exists
Following components by weight percent is included in: described material:
Polydactyl acid: 30-50 part,
Filler: 15-20 part,
Binding agent: 5-15 part,
Modifying agent: 0.01-3 part,
Dispersant: 0.5-0.8 part,
Defoamer: 0.1-0.6 part,
Plants essential oil: 0.5-0.8 part,
Described filler is at least one in galapectite, Palygorskite or kaolinite；
Described modifying agent is polyether-modified polydimethylsiloxane；
Described adhesive preparation method is as follows:
(1) modified: in the hydrochloric acid solution that 100 weight portion concentration are 0.1-1mol/L, to add the methyl of 10-25 weight portion
Acryloxypropyl trimethoxy silane, and stir under the speed of 300-600r/min, add 20-40 weight portion
Soybean protein, after stirring, is warming up to 100 DEG C, and isothermal reaction 2-4h obtains modified soy-bean protein solution；
(2) crosslinking: add the glutaraldehyde solution 0.4-4 weight that mass percent is 1.5-5.5% in aforementioned (1) solution
Part, react 2-3h at 50-80 DEG C；
(3) chain extension: add potassium peroxydisulfate 0.3-3 part, sodium sulfite 0.2-2 part, ethyl acetate in aforementioned (2) solution
0.6-6 part, 45-60 DEG C of reaction 3-5h.
As a further improvement on the present invention, the preparation method of described polydactyl acid is as follows: weigh particles of polylactic acid molten
In organic solvent, described organic solvent is one or more in acetonitrile, dichloromethane or acetone to solution, obtains concentration 0.05-
The solution of 0.08g/mL, adds PVP, described particles of polylactic acid: PVP mass ratio is 2: 1-1.2: 1, stands to polylactic acid after shaking up
Solid dissolves, and is subsequently adding montmorillonite, described particles of polylactic acid: montmorillonite mass ratio is 35: 1-20: 1, super at 30-40 DEG C
Sound dispersion 30-50min, obtains oil mixture；Take 0.01g/mL polyvinyl alcohol water solution, add glycerol monolaurate, make
Glycerol monolaurate concentration is 0.002g/ml, and stirring and dissolving obtains aqueous mixture；Aqueous mixture is placed on magnetic force stir
Mix and stir on device, with syringe, oil mixture is instilled, described oil mixture: aqueous mixture volume ratio=2: 1-3: 1,
Drip complete, continue stirring and volatilize completely to organic solvent, the mixture containing polylactic acid microgranule obtained is entered by centrifuge
Row centrifugal 15-20min, rotating speed 10000r/min, outwell the supernatant, is taken out by lower floor's solid particle and is placed in drying basin,
At 45 DEG C, vacuum drying obtains polydactyl acid microgranule.
As a further improvement on the present invention, the one during described plants essential oil is Oleum Bulbus Allii, Herba Origani oil or tea tree ethereal oil
Or it is several.
As a further improvement on the present invention, described dispersant is alkyl polyglucoside.
As a further improvement on the present invention, described defoamer is polyoxyethylene polyoxy propanol amidogen ether or polyoxypropylene glyceryl
One or more in ether.
Filler galapectite, Palygorskite and kaolinite structure in the present invention are the laxest, internal containing numerous small holes,
Specific surface area is relatively big, has relatively strong selectivity absorption property, utilizes its porous to be immersed in wherein by plants essential oil, it is possible to make to plant
Thing quintessence oil slowly discharges, it is ensured that volatile quantity is in suitable scope, to reach long acting antibiotic effect；And they have time wet viscosity,
Plasticity and preferable suspension are good, can effectively prevent coating precipitation, layering；In the present invention, binding agent passes through methacryloxypropyl
Base propyl trimethoxy silicane hydrolyzes generation hydroxyl in hydrochloric acid solution, occurs with free amine group or the carboxyl on soybean protein surface
Dehydration, introduces unsaturated double-bond in soybean protein molecular structure, so that soybean protein is become hydrophobicity by hydrophilic,
Due to galapectite, Palygorskite, kaolinite has certain hygroscopicity, by mixing with this soybean protein, can suppress them
Hygroscopicity, then by and glutaraldehyde crosslink, by add chain extender carry out chain extension so that soybean protein is internally formed
More complicated network structure, the cohesiveness and toughness, the modified soy-bean protein obtained and the polydactyl acid that increase soybean protein are mixed
The barrier property of paper products can be strengthened after conjunction.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail.
Adhesive A preparation method is as follows:
(1) modified: to be that 0.1mol/L hydrochloric acid solution adds the methacryloxypropyl of 10 weight portions toward 100 weight portion concentration
Base propyl trimethoxy silicane, and stir under the speed of 300r/min, adding the soybean protein of 20 weight portions, stirring is all
After even, it is warming up to 100 DEG C, isothermal reaction 2h, obtain modified soy-bean protein solution；
(2) crosslinking: add 1.5% glutaraldehyde solution 0.4 weight portion in aforementioned (1) solution, reacts 2-3h at 60 DEG C；
(3) chain extension: add potassium peroxydisulfate 0.3 part, sodium sulfite 0.2 part, ethyl acetate 0.6 in aforementioned (2) solution
Part, 50 DEG C of reaction 3h.
Binding agent B preparation method is as follows:
(1) modified: in the hydrochloric acid solution that 100 weight portion concentration are 1mol/L, to add the methacryloxypropyl of 25 weight portions
Base propyl trimethoxy silicane, and stir under the speed of 600r/min, adding the soybean protein of 40 weight portions, stirring is all
After even, it is warming up to 100 DEG C, isothermal reaction 4h, obtain modified soy-bean protein solution；
(2) crosslinking: add 5.5% glutaraldehyde solution 4 weight portion in aforementioned (1) solution, reacts 3h at 80 DEG C；
(3) chain extension: addition potassium peroxydisulfate 3 parts in aforementioned (2) solution, sodium sulfite 2 parts, ethyl acetate 6 parts, 60 DEG C
Reaction 5h.
The preparation method of polydactyl acid is as follows:
Claim 5g to take particles of polylactic acid to be dissolved in 100mL acetonitrile, obtain the solution of concentration 0.05g/mL, add 2.5gPVP,
Standing after shaking up and dissolve to polylactic acid solid, be subsequently adding 0.25g montmorillonite, at 30 DEG C, ultrasonic disperse 30min, obtains oil phase
Mixture；Take 0.01g/mL polyvinyl alcohol water solution 50mL, add 0.1g glycerol monolaurate, stirring and dissolving, obtain aqueous phase
Mixture；Aqueous mixture is placed on magnetic stirring apparatus stirring, with syringe, oil mixture is instilled, drip complete, continue
Continuous stirring is volatilized completely to organic solvent, and by centrifuge, the mixture containing polylactic acid microgranule obtained is centrifuged 20min,
Rotating speed 10000r/min, outwells the supernatant, is taken out by lower floor's solid particle and is placed in drying basin, is vacuum dried at 45 DEG C
Obtain polydactyl acid microgranule.
Embodiment 1
Polydactyl acid: 30 parts
Palygorskite: 15 parts
Adhesive A: 5 parts
Polyether-modified polydimethylsiloxane: 0.05 part
Alkyl polyglucoside: 0.5 part
Polyoxyethylene polyoxy propanol amidogen ether: 0.1 part
Oleum Bulbus Allii: 0.5 part
Embodiment 2
Polydactyl acid: 50 parts
Palygorskite: 20 parts
Adhesive A: 15 parts
Polyether-modified polydimethylsiloxane: 2 parts
Alkyl polyglucoside: 0.8 part
Polyoxyethylene polyoxy propanol amidogen ether: 0.6 part
Oleum Bulbus Allii: 0.8 part
Embodiment 3
Polydactyl acid: 40 parts
Palygorskite: 18 parts
Adhesive A: 10 parts
Polyether-modified polydimethylsiloxane: 1 part
Alkyl polyglucoside: 0.7 part
Polyoxyethylene polyoxy propanol amidogen ether: 0.2 part
Herba Origani oil: 0.6 part
Embodiment 4
Polydactyl acid: 45 parts
Galapectite: 20 parts
Binding agent B:15 part
Polyether-modified polydimethylsiloxane: 0.08 part
Alkyl polyglucoside: 0.5 part
Polypropylene glycerol aether: 0.1 part
Tea tree ethereal oil: 0.8 part
Embodiment 5
Polydactyl acid: 35 parts
Kaolinite: 15 parts
Binding agent B:15 part
Polyether-modified polydimethylsiloxane: 1.5 parts
Alkyl polyglucoside: 0.5 part
Polypropylene glycerol aether: 0.6 part
Tea tree ethereal oil: 0.8 part
Embodiment 6
Polydactyl acid: 50 parts
Kaolinite: 15 parts
Binding agent B:15 part
Polyether-modified polydimethylsiloxane: 2 parts
Alkyl polyglucoside: 0.8 part
Polypropylene glycerol aether: 0.6 part
Plants essential oil: 0.5 part
By the paper after body paper and coating according to GB/T 10739-2002 process.At ZAA2300, (Germany ZEHNTNER is public
Department) use on coating machine various embodiments above gained coating that paper is coated, coater speed is set as 3m/min, coating
Using air dry oven dry paper afterwards, baking temperature is set to 60 DEG C.
Water vapour permeability is tested
The barrier property moisture-vapor transmission of steam is evaluated, according to GB/T1037-1988 plastics by paper and cardboard
Thin film and the cup type method of sheet material water vapor permeability test method use the TSY-T1H poisture-penetrability tester moisture-vapor transmission to paper
Testing, test temperature 38 ± 1 DEG C, relative humidity is 90 ± 2%.Oxygen permeability is tested
Oxygen permeability OTR oxygen transmission rate is evaluated, according to GB/T 1038-2000 plastic sheeting and thin slice gas-premeable
Test method uses VAC-V1 pressure differential gas permeameter to test the OTR oxygen transmission rate of paper.
Grease proofness is tested
Grease proofness is measured according to TAPPI T-559cm-02 method.Oleum Ricini is placed on paper, then, saw after 15 seconds
Examining the os-motic state of oil, oil does not has the grease proofness maximum point given by infiltration to be appointed as the grease proofness of paper.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (5)
1. a paper products coating material, it is characterised in that: described material includes following components by weight percent:
Polydactyl acid: 30-50 part,
Filler: 15-20 part,
Binding agent: 5-15 part,
Modifying agent: 0.01-3 part,
Dispersant: 0.5-0.8 part,
Defoamer: 0.1-0.6 part,
Plants essential oil: 0.5-0.8 part,
Described filler is at least one in galapectite, Palygorskite or kaolinite；
Described modifying agent is polyether-modified polydimethylsiloxane；
Described adhesive preparation method is as follows:
(1) modified: in the hydrochloric acid solution that 100 weight portion concentration are 0.1-1mol/L, to add the metering system of 10-25 weight portion
Acryloxypropylethoxysilane trimethoxy silane, and stir under the speed of 300-600r/min, add the Semen sojae atricolor of 20-40 weight portion
Albumen, after stirring, is warming up to 100 DEG C, and isothermal reaction 2-4h obtains modified soy-bean protein solution；
(2) crosslinking: add the glutaraldehyde solution 0.4-4 weight portion that mass percent is 1.5-5.5% in aforementioned (1) solution,
2-3h is reacted at 50-80 DEG C；
(3) chain extension: add potassium peroxydisulfate 0.3-3 part, sodium sulfite 0.2-2 part, ethyl acetate 0.6-in aforementioned (2) solution
6 parts, 45-60 DEG C of reaction 3-5h.
A kind of paper products coating material the most according to claim 1, it is characterised in that: the preparation of described polydactyl acid
Method is as follows: weighing particles of polylactic acid and dissolve in organic solvent, described organic solvent is in acetonitrile, dichloromethane or acetone
One or more, obtain the solution of concentration 0.05-0.08g/mL, adds PVP, described particles of polylactic acid: PVP mass ratio is 2: 1-
1.2: 1, stand after shaking up and dissolve to polylactic acid solid, be subsequently adding montmorillonite, described particles of polylactic acid: montmorillonite mass ratio is
35: 1-20: 1, at 30-40 DEG C, ultrasonic disperse 30-50min, obtains oil mixture；Take 0.01g/mL polyvinyl alcohol water-soluble
Liquid, adds glycerol monolaurate, and making glycerol monolaurate concentration is 0.002g/ml, stirring and dissolving, obtains aqueous phase mixing
Thing；Aqueous mixture is placed on magnetic stirring apparatus stirring, with syringe, oil mixture is instilled, described oil mixture:
Aqueous mixture volume ratio=2: 1-3: 1, drip complete, continue stirring to organic solvent and volatilize completely, newborn containing gathering by obtain
The mixture of acid microgranule is centrifuged 15-20min, rotating speed 10000r/min by centrifuge, the supernatant is outwelled, by lower floor
Solid particle takes out and is placed in drying basin, and at 45 DEG C, vacuum drying obtains polydactyl acid microgranule.
A kind of paper products coating material the most according to claim 1, it is characterised in that: described plants essential oil is Bulbus Allii
One or more in oil, Herba Origani oil or tea tree ethereal oil.
A kind of paper products coating material the most according to claim 3, it is characterised in that: described dispersant is alkyl sugar
Glycosides.
A kind of paper products coating material the most according to claim 4, it is characterised in that: described defoamer is polyoxyethylene
One or more in polyoxy propanol amidogen ether or polypropylene glycerol aether.
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| CN201610435355.2A CN106065544B (en) | 2016-06-17 | 2016-06-17 | A kind of paper products coating material |
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| CN201610435355.2A CN106065544B (en) | 2016-06-17 | 2016-06-17 | A kind of paper products coating material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110387771A (en) * | 2019-06-21 | 2019-10-29 | 周西 | A kind of preparation method of anti-moisture absorption type high-barrier food packaging paper material |
| CN111962330A (en) * | 2020-07-22 | 2020-11-20 | 珠海红塔仁恒包装股份有限公司 | White cardboard for packaging quick-frozen food and preparation method thereof |
| CN114108382A (en) * | 2021-11-06 | 2022-03-01 | 江苏大亚新型包装材料有限公司 | Moisture-proof oxygen-resistant packaging paper and preparation method thereof |
| CN114671962A (en) * | 2022-03-22 | 2022-06-28 | 青岛科技大学 | Sizing agent, preparation method thereof and paper coated with sizing agent |
| CN115928489A (en) * | 2022-03-21 | 2023-04-07 | 湖南翠上环保科技有限公司 | Waterproof and oleophobic environment-friendly coating for paper products and preparation method thereof |
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| CN102408727A (en) * | 2011-09-09 | 2012-04-11 | 广东工业大学 | Soybean protein isolate (SPI)-halloysite nano composite gel material and preparation method thereof |
| CN103665270A (en) * | 2012-09-13 | 2014-03-26 | 东北农业大学 | Preparation method of soy protein adhesive |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110387771A (en) * | 2019-06-21 | 2019-10-29 | 周西 | A kind of preparation method of anti-moisture absorption type high-barrier food packaging paper material |
| CN111962330A (en) * | 2020-07-22 | 2020-11-20 | 珠海红塔仁恒包装股份有限公司 | White cardboard for packaging quick-frozen food and preparation method thereof |
| CN114108382A (en) * | 2021-11-06 | 2022-03-01 | 江苏大亚新型包装材料有限公司 | Moisture-proof oxygen-resistant packaging paper and preparation method thereof |
| CN114108382B (en) * | 2021-11-06 | 2022-11-01 | 江苏大亚新型包装材料有限公司 | Moisture-proof oxygen-barrier packaging paper and preparation method thereof |
| CN115928489A (en) * | 2022-03-21 | 2023-04-07 | 湖南翠上环保科技有限公司 | Waterproof and oleophobic environment-friendly coating for paper products and preparation method thereof |
| CN114671962A (en) * | 2022-03-22 | 2022-06-28 | 青岛科技大学 | Sizing agent, preparation method thereof and paper coated with sizing agent |
| CN114671962B (en) * | 2022-03-22 | 2023-06-20 | 青岛科技大学 | Sizing agent, preparation method thereof and paper coated with sizing agent |
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| CN106065544B (en) | 2017-08-08 |
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