CN110330857A - Food packaging metallic paint and preparation method thereof - Google Patents
Food packaging metallic paint and preparation method thereof Download PDFInfo
- Publication number
- CN110330857A CN110330857A CN201910501737.4A CN201910501737A CN110330857A CN 110330857 A CN110330857 A CN 110330857A CN 201910501737 A CN201910501737 A CN 201910501737A CN 110330857 A CN110330857 A CN 110330857A
- Authority
- CN
- China
- Prior art keywords
- food packaging
- metallic paint
- solvent
- packaging metallic
- epoxy resin
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Classifications
-
- 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C09D7/65—Additives macromolecular
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to food packaging applications, a kind of food packaging metallic paint and preparation method thereof is disclosed, wherein food packaging metallic paint includes following component: epoxy resin, and 22~32%；Curing agent, 4~8%；Catalyst, 0.05~0.2%；Adhesion promoter, 0.2~1.0%；Modified waxes, 2~8%；Organic solvent, 55~70%.Food packaging metallic paint provided by the invention, is organically combined by various ingredients, and coating obtained by the food packaging metallic paint has good machinability, flexibility, heat-resisting quantity, the adhesiveness with seal washer.
Description
Technical field
The present invention relates to food packaging applications more particularly to a kind of food packaging metallic paint and preparation method thereof.
Background technique
Existing Domestic Beer packaging, what is generallyd use is the packaging that vial and tin plate cover add rubber liner, this
Packaging need to use special tool, such as bottle opener when opening.Simultaneously as summer temperature is high, the pressure in the bottle increases therewith, opens beer
When wine bottle cover, powerful air-flow easily goes out bottle cap in bottle, leads to the generation of casualty accident.In addition, the rubber of closure inside
Liner contains the substance being harmful to the human body, such as phthalic acid ester, may aggravate in the case of a high temperature harmful substance release or
Cause to generate new harmful substance.
With the quickening that international Wines packing is changed in recent years, domestic wine product packaging also shows the change of a new round.
At present, the bottle cap of domestic some high-grade beer, is just gradually changed into using aluminum turn-break type screw lid made of special material.This
Kind aluminum turn-break type screw lid has the advantages that a variety of, such as easy to open, safety coefficient height；Air-tightness is good, can effectively prevent gas leakage.
It is contacted due to existing with food and drink, aluminum bottle cover needs corresponding coating directly to connect to completely cut off aluminium alloy with drinks
Touching.However, aluminum alloy sheet can generate largely deformation when aluminum alloy sheet is processed into aluminum bottle cover, it is easy to make to be attached to
Coating on aluminum alloy sheet generates cracking.Meanwhile packaging material of the aluminum bottle cover as food and drink is needed before finished product
The sterilization processing that pass through thermophilic digestion, is easy to cause white spotted finiss and falls off.In addition, aluminum bottle cover must also cooperate accordingly
Seal washer is just able to achieve the sealing to food and drink.Coating on the market simultaneously can not meet the above demand simultaneously.
Summary of the invention
For the problem for being used for food packaging coating property deficiency in the prior art, the present invention provides a kind of food packets
Dress with metallic paint and preparation method thereof, with improve the machinability of the coating made of coating, flexibility, heat-resisting quantity, with
The adhesiveness of seal washer.
The present invention provides a kind of food packaging metallic paint, by mass percentage, the food packaging metal
Coating includes following component:
Epoxy resin, 22~32%；
Curing agent, 4~8%；
Catalyst, 0.05~0.2%；
Adhesion promoter, 0.2~1.0%；
Modified waxes, 2~8%；
Organic solvent, 55~70%.
Optionally, the epoxide equivalent of the epoxy resin is 250~5000g/eq.
Optionally, the curing agent include amino resins, benzene in amino resins, Lauxite, glycoluril resin at least
It is a kind of.
Optionally, the catalyst includes p-methyl benzenesulfonic acid, dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonyl naphthalene two
At least one of sulfonic acid.
Optionally, the adhesion promoter includes polyester phosphate, epoxy phosphate ester, in acrylic acid modified phosphate
It is at least one.
Optionally, the modified waxes include polyethylene wax, polypropylene wax, oxidized polyethylene wax, carboxy-modified polyethylene wax
At least one of.
Optionally, the organic solvent includes aromatic hydrocarbon solvent, alcohols solvent, ether solvent, esters solvent or ketone
At least one of solvent.
Optionally, the aromatic hydrocarbon solvent includesWithAt least one of；
The alcohols solvent includes at least one of n-butanol, isobutanol, diacetone alcohol, dipropylene glycol；
The ether solvent includes glycol ether, butyl glycol ether, butyl, ethylene glycol phenyl ether and propylene glycol first
At least one of ether；
The esters solvent includes at least one of propylene glycol methyl ether acetate, dimethyl ester solvent, butyl acetate；
The ketones solvent includes at least one of methyl iso-butyl ketone (MIBK), isophorone and cyclohexanone.
The present invention also provides the preparation methods of above-mentioned food packaging metallic paint, comprising:
With the organic solvent dissolved epoxy of preset ratio in all organic solvents, epoxy resin solution is obtained；
The epoxy resin solution, curing agent are added to the remainder in addition to the organic solvent of preset ratio
In organic solvent, the epoxy resin solution, the curing agent and the organic solvent are stirred evenly, obtain homomixture；
Adhesion promoter, catalyst and modified waxes are added into the homomixture, are stirred under specified revolving speed, stirring is equal
It is even, obtain the food packaging metallic paint.
The present invention also provides a kind of packaging material for food, including metal alloy compositions and it is covered in the metal alloy material
Coating on material, the coating have used above-mentioned food packaging metallic paint.
Food packaging metallic paint provided by the invention, is organically combined by various ingredients, the food packaging gold
Belonging to coating obtained by coating has good machinability, flexibility, heat-resisting quantity, the adhesiveness with seal washer.Its is good
Good machinability and flexibility, meets the processing request of aluminum alloy sheet, the coating after processing on aluminum alloy sheet does not crack.Its
Good heat-resisting quantity, so that the coating after the sterilization processing of thermophilic digestion is not fallen off, non-whitening.Its good and gasket
The adhesiveness of circle, so that in assembling aluminum bottle cover finished product, when placing seal washer into aluminum bottle cover, without additional coating bonding
Agent improves the packaging efficiency of aluminum bottle cover finished product, reduces the production cost of aluminum bottle cover finished product.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Embodiment, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to solve
The present invention is released, is not intended to limit the present invention.
The embodiment of the invention discloses a kind of food packaging metallic paint, by mass percentage, comprising:
Epoxy resin, 22~32%；
Curing agent, 4~8%；
Catalyst, 0.05~0.2%；
Adhesion promoter, 0.2~1.0%；
Modified waxes, 2~8%；
Organic solvent, 55~70%.
In the present embodiment, epoxy resin refers to the quasi polymer containing more than two epoxy groups in molecule, usually by
Epoxychloropropane is formed with bisphenol-A or polyhydric alcohol.Due to the chemical activity of epoxy group, a variety of changes containing active hydrogen can be used
Closing object makes epoxy resin open loop, and solidification crosslinking generates reticular structure, belongs to thermosetting resin.It can choose according to actual needs applicable
In the epoxy resin of coating, such as national capital chemical industry YD-014, YD-017, YD-019, YD-020, South Asia NPSN-134X80, NPSN-
134X85, NPSN-134X90, Tao Shi EP-10014, EP-1007, EP-1009 etc..
Specifically, the epoxide equivalent of the epoxy resin is 250~5000g/eq.
Epoxide equivalent refers to the epoxy resin quality containing monovalent (being equivalent to 1 mole) epoxy group.It is in epoxide equivalent
When 250~5000g/eq, epoxy resin has the viscosity being more suitable for, and is conducive to be attached on metal alloy compositions.
Curing agent herein refers to the curing agent suitable for epoxy resin, chemically reacts with epoxy resin, shape
Space polymers are reticulated, composite material aggregate envelope among reticulate body.Particularly, curing agent herein can be chosen and contain
The resin of ammonia, if amino resins, benzene are for amino resins, Lauxite, glycoluril resin.One kind can be selected, it can also be with a variety of mixed
With.Adoptable curing agent can be Ineos Resimene 741, Maprenal MF 988, CE 8824, Resimene
U970, Resimene U918, at least one of profound new Cymel 659, Cymel U-80,1170 Cymel.
The main function of catalyst is the hardness for reducing the solidification temperature of coating, shortening curing time, improving coating, light
Pool, moisture resistance and corrosion resistance, the mechanical performance for improving coating.Case type acidic catalyst can be selected in catalyst, such as right
Toluenesulfonic acid, dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid.In a preferred embodiment, catalyst is optional
With at least one of Jin Shi NACURE 3525, NACURE 1323, NACURE 5225, NACURE 2522.
Adhesion promoter, for improving the adhesive force of coating and metal alloy compositions.Adhesion promoter can be poly-
At least one of ester phosphate, epoxy phosphate ester, acrylic acid modified phosphate.Preferably, adhesion promoter can be selected from
One or more of cyanogen spy Additol XL180, LUBRIZOL2061, the modest ADP of moral, Germany degussa LTW.
Modified waxes are a kind of wax products between native paraffin and synthetic wax.Coating and seal washer can be improved in modified waxes
Caking property.Modified waxes include polyethylene wax, polypropylene wax, oxidized polyethylene wax, at least one in carboxy-modified polyethylene wax
Kind.Preferably, modified waxes are selected from one or more of day poem wax powder PEW0310, PEW0300, PEW0301, PEW0851.
Organic solvent plays the role of being dissolved epoxy, adjusting coating concentration in coating.Organic solvent includes
At least one of aromatic hydrocarbon solvent, alcohols solvent, ether solvent, esters solvent or ketones solvent.Aromatic hydrocarbon solvent packet
It includes(It is the registered trademark of Exxon Mobil,It is all that commercially available arene is molten
Agent),WithAt least one of.Alcohols solvent includes n-butanol, isobutanol, dipropyl
At least one of keto-alcohol, dipropylene glycol.Ether solvent includes glycol ether, butyl glycol ether, butyl, ethylene glycol
At least one of phenylate and propylene glycol monomethyl ether.Esters solvent includes propylene glycol methyl ether acetate, dimethyl ester solvent, acetic acid fourth
At least one of ester.Ketones solvent includes at least one of methyl iso-butyl ketone (MIBK), isophorone and cyclohexanone.Organic solvent
It is further selected from and is suitable for the solvent of food packaging coating in other.
The embodiment of the invention also provides a kind of preparation methods of food packaging metallic paint, comprising:
With the organic solvent dissolved epoxy of preset ratio in all organic solvents, epoxy resin solution is obtained；
The epoxy resin solution, curing agent are added to the remainder in addition to the organic solvent of preset ratio
In organic solvent, the epoxy resin solution, the curing agent and the organic solvent are stirred evenly, obtain homomixture；
Adhesion promoter, catalyst and modified waxes are added into the homomixture, are stirred under specified revolving speed, stirring is equal
It is even, obtain the food packaging metallic paint.
In the present embodiment, the proportion of each ingredient can refer to the food packaging metallic paint of an embodiment.It is eaten preparing
When product are packed for metallic paint, first epoxy resin is dissolved in organic solvent.The concentration of epoxy resin solution can be 30%-
40%.Then epoxy resin solution, curing agent are added in the organic solvent of remainder, are stirred evenly, it is transparent to obtain presentation
The homomixture of shape.At this point, adhesion promoter, catalyst and modified waxes can be added into homomixture, and stirred under specified revolving speed
It mixes, coating is made to mix well and (here, be equal to and stir evenly), prepared food packaging metallic paint can be obtained.
Here, the lotion generally solid colour for referring to coating is mixed well, without apparent floating material.By coating roller coating work
Skill then can get coated on metal alloy compositions and form corresponding coating.Specified revolving speed can be 900~1000rpm.
The embodiment of the invention also provides a kind of packaging material for food, including metal alloy compositions and it is covered in the metal
Coating on alloy material, the coating have used above-mentioned food packaging metallic paint.
Here, metal alloy compositions include but is not limited to ferroalloy, copper alloy, magnesium alloy, aluminium alloy, titanium alloy.It is excellent
It is selected as aluminium alloy.Packaging material for food can refer to finished product or semi-finished product made of the metal alloy compositions containing coating.For example, at
Product can refer to final crown cap, metal can obtained etc..Semi-finished product can refer to the metal alloy film of coating.It is worth note
Meaning, coating here refer to having used coating made from food packaging metallic paint.In practical applications, food packet
Package material may have been used the coating more than one layer, thus, packaging material for food signified in the present embodiment, in coating
At least one layer has used the food packaging metallic paint of above-described embodiment.
The following are the specific experimental datas of the embodiment of the present invention.
The food packaging metallic paint of table 1 is at being grouped as (unit: g)
It as shown in table 1, can first by epoxy resin YD-020, (this be as above-mentioned when preparing food packaging metallic paint
National capital chemical industry YD-020), epoxy resin YD-019 (this is above-mentioned national capital chemical industry YD-019) be configured to concentration be 35% ring
Oxygen resin solution.Organic solvent used herein is butyl glycol ether.
Propylene glycol methyl ether acetate, n-butanol, Solvesso100 are added into mixing kettle, ring is then added under stiring
Oxygen resin YD-020 (35%), YD-019 (35%), NPSN-134X85, curing agent Resimene U918 and Cymel
659, it is sufficiently stirred, until being uniformly mixed, transparence is presented in the homomixture of acquisition.Then adhesion promoter ADP, catalysis is added
Agent NACURE 5225, modified waxes PEW0851 are stirred in the state of 900~1000rpm of revolving speed, keep homomixture mixing equal
It is even, obtain the food packaging metallic paint of target product.
The coating as made from above-described embodiment food packaging metallic paint is tested for the property, specific test method
It is as follows.
1, the preparation of coating
It is coated on aluminium base by the coating of above-described embodiment with 14# bar, 190 DEG C of baking 12min, completion of cure, mesh
Mark dry film weight 6-8gsm (gram every square metre).
2, boiling is tested
Object difference is held according to packaging material, different boiling conditions may be selected, such as 85 DEG C/30min of boiling, boiling
121 DEG C/30min etc..Here the object that holds refers to food or beverage, such as beer, dairy products, mixed congee etc..This test is adopted
Boiling condition is 127 DEG C/45min.
Testing standard: this test indicates the state of blush in test board gas phase and liquid phase using V/W.Test result is divided into 1
~10 grades, 10 indicate best, and 1 indicates worst, and 6 following presentations cannot receive.
3, adhesive force is tested
Before and after boiling, fork is drawn on coating with cross-cut tester, at " # " shape, is with observation coating after 3M company tape pull 3 times
It is no to fall, contrast properties difference.Adhesion results standards of grading are divided into 0~10 grade, wherein " 0 grade " represents tape-stripping region
100% coating bonding, 0% falls；" 1 grade " represents the paint adhesion in tape-stripping region 90%, and 10% falls；With such
It pushes away, " 10 grades " represent tape-stripping region and all fall light, without any adhesive force.
Resistance to butanone (MEK) test
With the iron hammer of 6 layers of gauze package 1kg, then butanone (MEK) solvent of immersion liquid state moves back and forth tested to rub
Coating surface, one is denoted as once back and forth, exposes metal base until coating damages, record wiping number is MEK value.
Flexibility test
Aluminum clad plate is converted into 0T, 1T, 2T by T bender, and 3T etc. is seen after bending part is torn 10 times with 3M company adhesive tape
Examine whether coating falls, contrast properties difference.T-type bending is by paint film outward by template to curved 180 °, if without breakage, i.e.,
For 0T, if it find that cracking, then carried out on this basis to curved, if current without breakage, deflection meter is 1T, and so on can
Obtain 2T, 3T etc..
Pencil hardness test
It is tested according to standard GB/T 6739-86 " hardness of film pencil hardness method ".
Adhesiveness test
PE (polyethylene) gasket seal is heated to 150 DEG C of meltings, is dripped on the aluminium sheet of coating coating, with the iron block of 5kg
Hot pressing 10s tests adhesive strength after cooling.PE particle cannot be torn from coating to be fallen as qualification, can be torn and be fallen not conform to from coating
Lattice.
Test result is as follows:
Each embodiment coating performance test result of table 2
In table 2, comparative example 1 and comparative example 2 are coatings made from two kinds of commercially available food metallic paint.It can be seen by table 2
Out, embodiment 1-5 is up to standard in the test of each project.Comparative example 1 is then unqualified in adhesiveness project, illustrates that its is right
The adhesiveness of gasket seal is poor.Comparative example 2 is poor in the curved test performance of T, illustrates that its flexibility is poor.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of food packaging metallic paint, which is characterized in that by mass percentage, the food packaging metallic paint
Including following component:
Epoxy resin, 22~32%；
Curing agent, 4~8%；
Catalyst, 0.05~0.2%；
Adhesion promoter, 0.2~1.0%；
Modified waxes, 2~8%；
Organic solvent, 55~70%.
2. food packaging metallic paint according to claim 1, which is characterized in that the epoxide equivalent of the epoxy resin
For 250~5000g/eq.
3. food packaging metallic paint according to claim 1, which is characterized in that the curing agent includes amino tree
Rouge, benzene are at least one of amino resins, Lauxite, glycoluril resin.
4. food packaging metallic paint according to claim 1, which is characterized in that the catalyst includes to toluene sulphur
At least one of acid, dodecylbenzene sulfonic acid, dinonylnaphthalene sulfonic acid, dinonylnaphthalene disulfonic acid.
5. food packaging metallic paint according to claim 1, which is characterized in that the adhesion promoter includes poly-
At least one of ester phosphate, epoxy phosphate ester, acrylic acid modified phosphate.
6. food packaging metallic paint according to claim 1, which is characterized in that the modified waxes include polyethylene
At least one of wax, polypropylene wax, oxidized polyethylene wax, carboxy-modified polyethylene wax.
7. food packaging metallic paint according to claim 1, which is characterized in that the organic solvent includes aromatic hydrocarbon
At least one of class solvent, alcohols solvent, ether solvent, esters solvent or ketones solvent.
8. food packaging metallic paint according to claim 7, which is characterized in that the aromatic hydrocarbon solvent includes100、120 HesAt least one of 150；
The alcohols solvent includes at least one of n-butanol, isobutanol, diacetone alcohol, dipropylene glycol；
The ether solvent includes in glycol ether, butyl glycol ether, butyl, ethylene glycol phenyl ether and propylene glycol monomethyl ether
At least one；
The esters solvent includes at least one of propylene glycol methyl ether acetate, dimethyl ester solvent, butyl acetate；
The ketones solvent includes at least one of methyl iso-butyl ketone (MIBK), isophorone and cyclohexanone.
9. a kind of preparation method of food packaging metallic paint described in claim 1-8 any one, which is characterized in that packet
It includes:
With the organic solvent dissolved epoxy of preset ratio in all organic solvents, epoxy resin solution is obtained；
The epoxy resin solution, curing agent are added to the organic of the remainder in addition to the organic solvent of preset ratio
In solvent, the epoxy resin solution, the curing agent and the organic solvent are stirred evenly, obtain homomixture；
Adhesion promoter, catalyst and modified waxes are added into the homomixture, stirs, stirs evenly under specified revolving speed,
Obtain the food packaging metallic paint.
10. a kind of packaging material for food, which is characterized in that including metal alloy compositions and be covered on the metal alloy compositions
Coating, the coating used the food packaging metallic paint as described in claim 1-8 any one.
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|---|---|---|---|
| CN201910501737.4A CN110330857A (en) | 2019-06-11 | 2019-06-11 | Food packaging metallic paint and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910501737.4A CN110330857A (en) | 2019-06-11 | 2019-06-11 | Food packaging metallic paint and preparation method thereof |
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| CN110330857A true CN110330857A (en) | 2019-10-15 |
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| CN201910501737.4A Pending CN110330857A (en) | 2019-06-11 | 2019-06-11 | Food packaging metallic paint and preparation method thereof |
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Cited By (1)
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| CN112280423A (en) * | 2020-09-30 | 2021-01-29 | 苏州市三新材料科技股份有限公司 | High-resistance environment-friendly packaging barrel inner wall water-based paint and preparation method thereof |
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Application publication date: 20191015 |