CN106634129A - Mildewproof preservative film and preparation method thereof - Google Patents

Mildewproof preservative film and preparation method thereof Download PDF

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Publication number
CN106634129A
CN106634129A CN201611243830.2A CN201611243830A CN106634129A CN 106634129 A CN106634129 A CN 106634129A CN 201611243830 A CN201611243830 A CN 201611243830A CN 106634129 A CN106634129 A CN 106634129A
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China
Prior art keywords
keeping
mildew fresh
mould inhibitor
film
coating
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CN201611243830.2A
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Chinese (zh)
Inventor
钟文
田璐
许力
许文
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CHANGDE JINRUN NEW MATERIAL TECHNOLOGY CO., LTD.
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Changde Jin Run New Materials Technology Co Ltd Wuxi Research Institute Of New Materials
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Application filed by Changde Jin Run New Materials Technology Co Ltd Wuxi Research Institute Of New Materials filed Critical Changde Jin Run New Materials Technology Co Ltd Wuxi Research Institute Of New Materials
Priority to CN201611243830.2A priority Critical patent/CN106634129A/en
Publication of CN106634129A publication Critical patent/CN106634129A/en
Priority to PCT/CN2017/090900 priority patent/WO2018120704A1/en
Priority to ZA201800718A priority patent/ZA201800718B/en
Pending legal-status Critical Current

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    • 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
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0058—Biocides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/092—Polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/17—Amines; Quaternary ammonium compounds
    • C08K5/175—Amines; Quaternary ammonium compounds containing COOH-groups; Esters or salts thereof
    • 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
    • C09D129/00—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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/02—Homopolymers or copolymers of unsaturated alcohols
    • C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C09D131/00—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 an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
    • C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
    • C09D131/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • 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
    • C09D187/00—Coating compositions based on unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
    • 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
    • C09D7/63—Additives non-macromolecular organic
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/08—Copolymers of ethene
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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
    • C08J2429/00—Characterised by the use of 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • C08J2431/00—Characterised by the use of 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 an acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
    • C08J2431/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
    • C08J2431/04—Homopolymers or copolymers of vinyl acetate
    • 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
    • C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2475/04—Polyurethanes
    • 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
    • C08J2487/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds

Abstract

The invention discloses a mildewproof preservative film and a preparation method thereof. The mildewproof preservative film comprises a base layer and a mildewproof preservative coating arranged on the base layer, wherein the mildewproof preservative coating is prepared from a mildewproof preservative paint. The mildewproof preservative paint comprises the following components in percentage by weight: 20-60% of resin, 30-70% of solvent, 0.5-10% of mildew preventive and 0.3-5% of aid. The resin is composed of at least one of polyurethane, an acrylate copolymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinylidene chloride, an ethylene-vinyl acetate copolymer, a polyvinyl acetate copolymer and a vinyl acetate-butyl ester copolymer; and the solvent is composed of at least one of water and ethanol. The mildewproof preservative coating of the mildewproof preservative film has the advantages of compact surface and no void; and by adding the mildew preventive, the mildewproof preservative coating has the favorable effects of keeping the moisture constant and preventing mildewing. The mildewproof preservative film is especially suitable for preserving fruits, bread, tobacco and other foods which have shorter storage period, can easily mildew in a short time and need to be eaten in time.

Description

Anti-mildew fresh-keeping film and preparation method thereof
Technical field
The present invention relates to food technical field of memory, more particularly to a kind of anti-mildew fresh-keeping film and preparation method thereof.
Background technology
The condition of the shorter article storage of the Storage period such as food and tobacco leaf is harsher, otherwise will be a large amount of because of microorganism Breeding is gone mouldy and makes it no longer fresh, loses original value.Commonly use drying prescription and strong oxidizer to reach in industry at present To preservation, the environment of a relative water shortage is built with drier, press down mycostatic growth；Killed with strong oxidizer mould Bacterium.But the equal Shortcomings of both approaches.Strong oxidizer is unfriendly to human body and environment；And water of the drier in absorption air Divide the moisture that also can be absorbed simultaneously in food, in turn result in the problem of food-dewatering.
The content of the invention
Based on this, it is necessary to provide a kind of anti-mildew fresh-keeping film for keeping moisture constant and preventing from going mouldy and its preparation side Method.
A kind of anti-mildew fresh-keeping film, including basic unit and and the anti-mildew fresh-keeping coating in the basic unit, the anti-mildew fresh-keeping The raw material of coating is anti-mildew fresh-keeping coating, and anti-mildew fresh-keeping coating percentage composition by weight includes following component：Resin 20% ～60%, solvent 30%～70%, mould inhibitor 0.5%～10% and auxiliary agent 0.3%～5%, wherein the resin be polyurethane, Acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinilidene dichloroethylene, ethylene-vinyl acetate class copolymerization At least one in thing, polyvinyl acetate copolymer and vinylacetate-acrylate copolymer, the solvent is in water and ethanol At least one.
Above-mentioned anti-mildew fresh-keeping film, the anti-mildew fresh-keeping coating surface densification of employing, imporosity, and mould inhibitor is added with, because And have and preferably keep moisture constant and the effect for preventing from going mouldy.The anti-mildew fresh-keeping film is particularly well-suited to fruit, bread and cigarette The Storage periods such as leaf are shorter, easily go mouldy in short-term and need in time eat the fresh-keeping of article.Particularly, anti-mildew fresh-keeping film is coated when using There is the surface of anti-mildew fresh-keeping coating as inner surface, anti-mildew fresh-keeping coating can be promoted to connect with the fresh-keeping article in anti-mildew fresh-keeping film Touch, and then fresh-keeping effect can be improved.
Wherein in one embodiment, the acrylic acid esters co-polymer selected from methyl methacrylate-ethyl acrylate- Butyl acrylate copolymer, methyl methacrylate-butyl acrylate-acrylic copolymer, methyl methacrylate-acrylic acid At least one in butyl ester-acrylic acid-N hydroxymethyl acrylamide copolymer.
Wherein in one embodiment, the mould inhibitor is natural extract class mould inhibitor, and the natural extract class is prevented Mould dose carries selected from gingerol, catechin, citric acid, allicin, shitosan, sorbic acid, turmeric alcohol, cinnamomum camphora essential oil, Meng Zongzhu Take at least one in thing, Hinokitiol and nisin.
Wherein in one embodiment, the resin be acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, Modified polyvinilidene dichloroethylene, ethylene-vinyl acetate analog copolymer, polyvinyl acetate copolymer and vinylacetate-butyl ester During at least one in copolymer, anti-mildew fresh-keeping coating percentage composition by weight also includes the nertralizer less than 3%, institute State at least one of the nertralizer in sodium acid carbonate, triethylamine and ammoniacal liquor.
Wherein in one embodiment, the mould inhibitor is that non-natural extracts species mould inhibitor, the non-natural extract Class mould inhibitor is selected from sodium Diacetate, potassium sorbate, sodium sorbate, potassium citrate, sodium citrate, calcium propionate, sodium ascorbate, anti- Bad hematic acid potassium, sodium salicylate, trichlamide, dodecyl alanine, sodium isoascorbate, Kathon CG, nipagin esters, fumaric acid and At least one during bacteriolyze is mould.
Wherein in one embodiment, the mould inhibitor is that natural extract class mould inhibitor and non-natural extraction species are mould proof It is 0.4～1.5 that two kinds of agent, the natural extract class mould inhibitor and the non-natural extract the mass ratio of species mould inhibitor:1.
Wherein in one embodiment, the thickness of the anti-mildew fresh-keeping coating is 0.5～10 μm.One embodiment wherein In, the basic unit is PET film, PP films, PA6 films, eva film, EVOH films, PVA film or PLA films.
A kind of preparation method of anti-mildew fresh-keeping film, comprises the steps：
Anti-mildew fresh-keeping coating is prepared, the preparation method of the anti-mildew fresh-keeping coating comprises the steps：Raw material is provided, by weight Amount percentage composition includes：Resin 20%～60%, solvent 30%～70%, mould inhibitor 0.5%～10% and auxiliary agent 0.3%～ 5%；Wherein described resin is polyurethane, acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinilidene dichloro In ethene, ethylene-vinyl acetate analog copolymer, polyvinyl acetate copolymer and vinylacetate-acrylate copolymer extremely Few one kind, the solvent is at least one in water and ethanol；The resin, the solvent and the auxiliary agent are well mixed, Obtain mixed liquor；The mixed liquor and the mould inhibitor are well mixed, the anti-mildew fresh-keeping coating is obtained；
The anti-mildew fresh-keeping coating is coated in basic unit and carrying out heat treatment makes the anti-mildew fresh-keeping coating form mould proof Fresh-keeping coating, obtains the anti-mildew fresh-keeping film.
The preparation method of above-mentioned anti-mildew fresh-keeping film, resin forms network structure, mould inhibitor dispersion tree in anti-mildew fresh-keeping coating In the network structure of fat, the anti-mildew fresh-keeping coating for obtaining has preferably holding moisture constant and prevents the effect gone mouldy.This is prevented Mould preservative film is particularly well-suited to the guarantor that the Storage periods such as fruit, bread and tobacco leaf are shorter, easily go mouldy in short-term and need in time eat article It is fresh.
Wherein in one embodiment, in the preparation process of the anti-mildew fresh-keeping coating, the mould inhibitor is being added dropwise mode Add the mixed liquor to mix with the mixed liquor.
Description of the drawings
Fig. 1 is the structure chart of the anti-mildew fresh-keeping film of an embodiment；
Fig. 2 is the flow chart of the preparation method of the anti-mildew fresh-keeping coating of an embodiment.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating It is thorough comprehensive.
With reference to Fig. 1, the anti-mildew fresh-keeping film 1 of an embodiment, including basic unit 11 and apply with the anti-mildew fresh-keeping in basic unit 11 Layer 12.The raw material of anti-mildew fresh-keeping coating 12 is anti-mildew fresh-keeping coating.
Preferably, basic unit 11 be PET film (pet film), PP films (polypropylene film), PA6 films (polyamide 6 film), eva film (ethene-polyvinyl acetate copolymer film), EVOH film (ethylene-vinyls Alcohol copolymer film), PVA film (polyvinyl alcohol film) or PLA films (linear aliphatic polyesters-polylactic acid film).It is more excellent Choosing, basic unit 11 is PET film and PP films.PET and PP is up under conditions of 120 DEG C the property for remaining to keep excellent in temperature Can, and then insurance coating can be avoided to carry out being heat-treated forming the problem that anti-mildew fresh-keeping coating causes basic unit 11 to destroy.
It is furthermore preferred that the thickness of basic unit 11 is 12～22 μm.
Preferably, the thickness of anti-mildew fresh-keeping coating 12 is 0.5～10 μm.The thickness low LCL of anti-mildew fresh-keeping coating 12 then resin Can not effective film forming, then the effect of anti-mildew fresh-keeping can not embody.And the thickness of anti-mildew fresh-keeping coating 12 is blocked up, not only cost increases Plus, and can not be completely dried in heat treatment, it may appear that the bad phenomenon such as viscous is returned, and when not being completely dried, due to appearance Face is partially dried, and inside during continuing to air-dry, is easy to out still into liquid due to due to internal natural drying The situation of existing coating cracking, this also can greatly reduce the effect of anti-mildew fresh-keeping coating.
The invention provides the anti-mildew fresh-keeping coating of an embodiment.
The anti-mildew fresh-keeping coating, by weight percentage composition include following component：Resin 20%～60%, solvent 30%～ 70%th, mould inhibitor 0.5%～10% and auxiliary agent 0.3%～5%.
Wherein described resin is polyurethane, acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinilidene In dichloroethylene, ethylene-vinyl acetate analog copolymer, polyvinyl acetate copolymer and vinylacetate-acrylate copolymer At least one.So resin is selected good with mould inhibitor intersolubility and can be dissolved in the resin of aqueous solvent, and mould inhibitor can not only filled In being dispersed in resin, it is ensured that the effect of mould inhibitor, but also toxic solvent can be avoided from polluting the shortcoming of environment.
It is furthermore preferred that the resin is polyurethane, acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride and changes Property polyvinylidene chloride at least one, these resin chemistries compared with ethylene-vinyl acetate analog copolymer, poly-vinegar acid second Enoate copolymer and vinylacetate-acrylate copolymer are more stable, when it is used for preservative film and contacts with food, with more safe guarantor Barrier.
Resin is material of main part in the component, and the resin is high polymer of good performance, and itself will not go mouldy, and is made Into coating surface it is fine and close, imporosity, it is thus possible to limit the absorption and dissolving of hydrone to greatest extent, and intermolecular powerful Cohesiveness hydrone can be suppressed movable within, and then effectively suppress moisture turnover coating, reaching prevents from losing moisture With the effect for absorbing moisture, keep the constant and fresh-keeping moisturizing of moisture.
Preferably, acrylic acid esters co-polymer is selected from methyl methacrylate-ethyl acrylate-acrylic acid butyl ester copolymerization Thing, methyl methacrylate-butyl acrylate-acrylic copolymer, methyl methacrylate-butyl acrylate-acrylic acid-N- At least one in hydroxymethyl acrylamide copolymer.With methyl methacrylate-ethyl acrylate-acrylic acid acrylate copolymer As a example by, it is formed by methyl methacrylate, three kinds of monomer copolymerizations of ethyl acrylate and butyl acrylate.
Preferably, polyvinyl alcohol is selected from least in polyvinyl alcohol 1788, polyvinyl alcohol 2088 and polyvinyl alcohol 2488 Kind.Polyvinyl alcohol 1788, polyvinyl alcohol 2088 and polyvinyl alcohol 2488 are water-soluble polyvinyl alcohol well.With polyvinyl alcohol As a example by 1788, it is that the degree of polymerization is 1700, and alcoholysis degree is 88% polyvinyl alcohol.
Preferably, modified polyvinilidene dichloroethylene is selected from acrylate modified polyvinylidene chloride and polyurethane-modified poly- inclined two At least one in vinyl chloride.The water soluble characteristic of polyurethane-modified polyvinylidene chloride is obviously improved.
Wherein, solvent is at least one in water and ethanol.Water and ethanol are the solvent to environment-protecting asepsis, and it is used to prevent Mould preservative film 1 can be with the directly contact such as food, it is to avoid adopt polyurethane, polyvinyl alcohol, second to packing material using toxic solvent The water-soluble preferably resin such as alkene vinyl acetate lipin polymer, polyvinyl acetate copolymer, solvent is preferably water, to reach Environmental protection and the effect of reduces cost.
Wherein, mould inhibitor is at least one that natural extract class mould inhibitor and non-natural are extracted in species mould inhibitor.It is excellent Choosing, natural extract class mould inhibitor is selected from gingerol, catechin, citric acid, allicin, shitosan, sorbic acid, turmeric At least one in alcohol, cinnamomum camphora essential oil, Meng's ancestor's bamboo extract, Hinokitiol and nisin.Preferably, non-natural extract Class mould inhibitor is selected from sodium Diacetate, potassium sorbate, sodium sorbate, potassium citrate, sodium citrate, calcium propionate, sodium ascorbate, anti- Bad hematic acid potassium, sodium salicylate, trichlamide, dodecyl alanine, sodium isoascorbate, Kathon CG, nipagin esters, fumaric acid and At least one during bacteriolyze is mould.
Preferably, mould inhibitor is that natural extract class mould inhibitor and non-natural extract two kinds of species mould inhibitor.So adopt Two kinds of mould inhibitors are conducive to improving the mould proof agent content in resin, and then improve anti-mold effect.Preferably, mould inhibitor is day So extract species mould inhibitor and when non-natural extracts two kinds of species mould inhibitor, natural extract class mould inhibitor and non-natural extract The mass ratio of class mould inhibitor is 0.4～1.5:1.
Natural extract class mould inhibitor fungicidal properties in the basic conditions is preferable, and polyurethane sheet is as alkalescent.It is excellent Choosing, when mould inhibitor contains natural extract class mould inhibitor, and resin is acrylic acid esters co-polymer, polyvinyl alcohol, gathers inclined two Vinyl chloride, modified polyvinilidene dichloroethylene, ethylene-vinyl acetate analog copolymer, polyvinyl acetate copolymer and vinyl acetate During at least one in ester-acrylate copolymer, anti-mildew fresh-keeping coating percentage composition by weight also includes the neutralization less than 3% Agent, at least one of the nertralizer in sodium acid carbonate, triethylamine and ammoniacal liquor, the concentration of the ammoniacal liquor is not less than 3mol/ L.It is appreciated that nertralizer can be concentrated ammonia liquor.It is appreciated that mould inhibitor is non-natural extracts species mould inhibitor, in also can adding And agent.
Preferably, auxiliary agent includes at least one in surfactant, emulsifying agent, wetting agent, defoamer and sagging inhibitor. Wherein, surfactant is tween and sapn etc., and it is more uniform that surfactant can be such that mould inhibitor disperses in resin.Emulsifying agent May advantageously facilitate water-soluble poor resin and form stable aqueous emulsion.
Above-mentioned anti-mildew fresh-keeping coating, resin is dissolved in solvent and adjusts its film forming by auxiliary agent, controls component proportion, makes It can form surface compact, imporous coating, therefore, it is possible to limit the absorption and dissolving of hydrone to greatest extent, and high score Cohesiveness between son can suppress hydrone movement wherein, and then effectively suppress moisture turnover coating, reach holding water Divide the effect of constant and fresh-keeping moisturizing.Additionally, resin is good with mould inhibitor intersolubility so that mould inhibitor is well dispersed in resin, Ensure the effect of mould inhibitor, but also toxic solvent can be avoided to pollute the shortcoming of environment.
Mould inhibitor intracellular and then the elimination of micro-organisms can be entered by the cell membrane of microorganism or prevent its germination in case Only fungus growth, and then reach fresh-keeping effect steady in a long-term.
With reference to Fig. 2, the preparation method of above-mentioned anti-mildew fresh-keeping coating of the invention is comprised the following steps.
Step S110：Raw material is provided, percentage composition by weight includes：It is resin 20%～60%, solvent 30%～70%, anti- Mould dose 0.5%～10% and auxiliary agent 0.3%～5%.
Step S120：Resin, solvent and auxiliary agent are well mixed, mixed liquor is obtained.
Specifically, the temperature of resin, solvent and auxiliary agent mixing is 30～65 DEG C in step S120.
Specifically, step S120 is comprised the following steps：Resin is dissolved in solvent, is 100～300 revs/min in rotating speed Under be stirred and heated to 30～65 DEG C；Auxiliary agent is added, continues to stir 30～60min in the case where rotating speed is for 200～400 revs/min, obtained To mixed liquor.So control temperature and stirring intensity, promote mixed liquor to be well mixed.
Specifically, when mould inhibitor contains natural extract class mould inhibitor, anti-mildew fresh-keeping coating percentage composition by weight is also wrapped The nertralizer less than 3% is included, step S120 also includes step：Obtain adding the nertralizer to adjust mixed liquor after mixed liquor PH value be 7～8.The pH that nertralizer adjusts mixed liquor is added to be the acid-base value for control system so that the acid-base value of system It is close to as far as possible neutral so that the acid-base value of coating is close to neutrality, and then improves its feature of environmental protection.
Step S130：Mixed liquor and mould inhibitor are well mixed, anti-mildew fresh-keeping coating is obtained.
Mixed liquor and mould inhibitor are well mixed so that mould inhibitor is dispersed in inside resin, it is to avoid mould inhibitor is swimming Amorph is soluble in water when resulting in coating, and the effective content of mould inhibitor declines and then reduces the problem of anti-mold effect.Mould inhibitor leads to The cell membrane of microorganism is crossed into intracellular and then the elimination of micro-organisms or its germination is prevented to prevent fungus growth, and then is reached Fresh-keeping effect steady in a long-term.
Preferably, mould inhibitor adds mixed liquor to mix with mixed liquor so that mode is added dropwise, so that mould inhibitor more fully divides In being dispersed in resin, and avoid mould inhibitor free in a solvent as far as possible, and then improve the effective content of mould inhibitor.More preferably , it is when mould inhibitor is that natural extract class mould inhibitor and non-natural extract two kinds of species mould inhibitor, two kinds of mould inhibitors are independent And while drop in mixed liquor, to prevent two kinds of mould inhibitors, successively addition causes the latter's mould inhibitor more to be deposited with free state In being solvent, causing can not reach preferably with reference to the problem of effect.
Preferably, mixed liquor and the condition of mould inhibitor mixing are 1～2h of mixing at 30～65 DEG C in step S130.Can be with Understand, mould inhibitor after mould inhibitor completion of dropwise addition, mixed liquor and mould inhibitor is continued to mix 1～2h so that mode plus fashionable is added dropwise. The stirring mixing in the case where rotating speed is for 500～800 revs/min of step S130.
The preparation method of above-mentioned anti-mildew fresh-keeping coating, process is simple, it is easy to accomplish, the anti-mildew fresh-keeping coating film forming for obtaining It is good, surface compact, imporous anti-mildew fresh-keeping coating can be formed, it is thus possible to limit the absorption of hydrone and molten to greatest extent Solution, and the cohesiveness between macromolecule can suppress hydrone movement wherein, and then effectively suppress moisture turnover coating, reach To the effect for keeping the constant and fresh-keeping moisturizing of moisture.Additionally, mould inhibitor is dispersed in inside resin, it is to avoid mould inhibitor is with free State there is a problem of soluble in water resulting in mould proof agent content during coating and declining and then reduce anti-mold effect.Mould inhibitor is by micro- Biological cell membrane is into intracellular and then the elimination of micro-organisms or prevents its germination to prevent fungus growth, and then reaches long-term Stable fresh-keeping effect.
The anti-mildew fresh-keeping coating is particularly well-suited to that the Storage periods such as fruit, bread and tobacco leaf are shorter, easily go mouldy in short-term and need and When edible article it is fresh-keeping.
Present invention also offers the preparation method of the anti-mildew fresh-keeping film of an embodiment.The preparation method is comprised the following steps： Prepare anti-mildew fresh-keeping coating；Anti-mildew fresh-keeping coating is coated in basic unit and carrying out heat treatment makes anti-mildew fresh-keeping coating form mould proof Fresh-keeping coating, obtains the anti-mildew fresh-keeping film.
The preparation method of above-mentioned anti-mildew fresh-keeping film, resin crosslinks reaction and forms network structure in anti-mildew fresh-keeping coating, Mould inhibitor is dispersed in the network structure of resin, the anti-mildew fresh-keeping coating for obtaining, surface compact, imporosity, thus this is anti- Mould fresh-keeping coating has and preferably keep the constant effect of moisture；Mould inhibitor is dispersed in inside resin, moreover it is possible to effectively prevented Go mouldy, and then reach preferable fresh-keeping effect.
Preferably, the coated weight that anti-mildew fresh-keeping coating is coated on basic unit 11 is 1～10g/m2, as anti-mildew fresh-keeping coating exists Coated weight in the unit area of basic unit 11, so as to the thickness for controlling anti-mildew fresh-keeping coating 12 is 0.5～10 μm.
Preferably, the condition of heat treatment is to process 5～10s in 80～120 DEG C.Resin crosslinks under this condition reaction Form fine and close network structure so that coating has the effect for preventing moisture from passing in and out.Due to the finite thickness of coating, heat treatment Time is oversize will to affect the performance of coating.
Preferably, the condition of heat treatment for successively in 80～85 DEG C, 90～100 DEG C, 105～120 DEG C, 90～100 DEG C and Process 1～2s at 80～85 DEG C respectively.So coating is heat-treated in the temperature province, and the temperature province distribution gradient makes Obtain coating film forming early stage gradually to heat up, the film forming later stage gradually lowers the temperature, and then improve the compactness of coating and ensure that coating will not be opened Split.It is furthermore preferred that the condition of heat treatment is to process 1.2s respectively at 80 DEG C, 90 DEG C, 120 DEG C, 100 DEG C and 85 DEG C successively.
Above-mentioned anti-mildew fresh-keeping film 1, the anti-mildew fresh-keeping coating surface densification of employing, imporosity, and mould inhibitor is added with, because And have and preferably keep moisture constant and the effect for preventing from going mouldy.The anti-mildew fresh-keeping film 1 is particularly well-suited to fruit, bread and cigarette The Storage periods such as leaf are shorter, easily go mouldy in short-term and need in time eat the fresh-keeping of article.Particularly, anti-mildew fresh-keeping film 1 is applied when using The surface of anti-mildew fresh-keeping coating 12 is covered with as inner surface, can be promoted fresh-keeping in anti-mildew fresh-keeping coating 12 and anti-mildew fresh-keeping film 11 Article contacts, and then fresh-keeping effect can be improved.
It is below specific embodiment.
Embodiment 1
Raw material is provided, percentage composition by weight includes：Polyurethane resin 60%, water 30%, gingerol 5%, tween 4%.
Polyurethane resin is soluble in water, it is stirred and heated to 50 DEG C in the case where rotating speed is for 300 revs/min；Auxiliary agent is added, Rotating speed is continuation stirring 50min under 300 revs/min, obtains mixed liquor.The pH value for adding mixed liquor after triethylamine is 7.
Gingerol is added into mixed liquor, gingerol completion of dropwise addition to be added dropwise under mode is stirred in the case where rotating speed is as 600 revs/min Afterwards, mixed liquor and gingerol are continued into the stirring mixing 1 in the case where rotating speed is for 600 revs/min.Cooling, obtains anti-mildew fresh-keeping coating.
Anti-mildew fresh-keeping coating is pressed into 10g/m2Coated weight be coated in PET film, then successively in 80 DEG C, 90 DEG C, 120 DEG C, process 1.2s respectively at 100 DEG C and 85 DEG C, obtain anti-mildew fresh-keeping film.
Embodiment 2
Raw material is provided, percentage composition by weight includes：The resin 47% of polyvinyl alcohol 2488, water 40%, sorbic acid and turmeric Root alcohol total amount 8%, tween 2% and sodium acid carbonate 3%.
The resin of polyvinyl alcohol 2488 is soluble in water, it is stirred and heated to 65 DEG C in the case where rotating speed is for 100 revs/min；Add Auxiliary agent, continues to stir 30min in the case where rotating speed is for 200 revs/min, obtains mixed liquor.Add the pH value of mixed liquor after sodium acid carbonate For 8.
Sorbic acid and turmeric alcohol are added into mixed liquor, sorb to be added dropwise under mode is stirred in the case where rotating speed is as 800 revs/min After acid and turmeric alcohol completion of dropwise addition, mixed liquor, sorbic acid and turmeric alcohol are continued in the case where rotating speed is for 500～800 revs/min Stirring mixing 2h.Cooling, obtains anti-mildew fresh-keeping coating.
Anti-mildew fresh-keeping coating is pressed into 1g/m2Coated weight be coated on PP films, then successively in 85 DEG C, 95 DEG C, 110 DEG C, 2s is processed respectively at 90 DEG C and 80 DEG C, obtains anti-mildew fresh-keeping film.
Embodiment 3
Raw material is provided, percentage composition by weight includes：Polyurethane-modified polyvinylidene chloride resin 20%, water 70%, ten Dialkyl group alanine 0.5% and tween 5%.
Polyurethane-modified polyvinylidene chloride resin is soluble in water, it is stirred and heated in the case where rotating speed is for 200 revs/min 60℃；Auxiliary agent is added, continues to stir 50min in the case where rotating speed is for 400 revs/min, obtain mixed liquor.
Dodecyl alanine is added into mixed liquor, dodecane to be added dropwise under mode is stirred in the case where rotating speed is as 500 revs/min After base alanine completion of dropwise addition, mixed liquor and dodecyl alanine are continued to stir in the case where rotating speed is for 500～800 revs/min Mixing 1.5h.Cooling, obtains anti-mildew fresh-keeping coating.
Anti-mildew fresh-keeping coating is pressed into 5g/m2Coated weight be coated on eva film, then successively in 83 DEG C, 100 DEG C, 105 DEG C, process 1s respectively at 95 DEG C and 82 DEG C, obtain anti-mildew fresh-keeping film.
Embodiment 4
Raw material is provided, percentage composition by weight includes：Vinylacetate-acrylate copolymer 40%, water and ethanol (volume ratio 1:1) (mass ratio of Meng ancestor bamboo extract and sodium isoascorbate is 1 for total amount 48%, Meng ancestor bamboo extract and sodium isoascorbate: 1) total amount 10%, sapn 1.5% and concentrated ammonia liquor 0.4%.Through repeatedly consideration, epoxy resin is not suitable for being used as connecting with food etc. Touch, present invention seek to address that be food and tobacco leaf etc. anti-mildew fresh-keeping effect.If with food security hidden danger as cost, can not Technical problem is solved at last.If continuing to select to retain epoxy resin, someone is for querying herein, if can pass through Shen Debate
Vinylacetate-acrylate copolymer is soluble in water, it is stirred and heated to 40 DEG C in the case where rotating speed is for 300 revs/min； Auxiliary agent is added, continues to stir 50min in the case where rotating speed is for 300 revs/min, obtain mixed liquor.Add the pH of mixed liquor after concentrated ammonia liquor It is worth for 7.5.
Meng ancestor bamboo extract and sodium isoascorbate while are stirred individually and in the case where rotating speed is as 800 revs/min in dropwise addition mode Lower addition mixed liquor is mixed, after mould inhibitor completion of dropwise addition, mixed liquor, Meng ancestor bamboo extract and sodium isoascorbate is continued in rotating speed For stirring mixing 2h under 800 revs/min.Cooling, obtains anti-mildew fresh-keeping coating.
Anti-mildew fresh-keeping coating is pressed into 8g/m2Coated weight be coated on PA6 films, then at 90 DEG C process 10s, obtain mould proof Preservative film.
Embodiment 5
Embodiment 5 is substantially the same manner as Example 4, and difference is that the mould inhibitor of embodiment 5 replaces with Hinokitiol and resists Bad hematic acid potassium, and the mass ratio of Hinokitiol and potassium ascorbate is 0.428:1；Anti-mildew fresh-keeping coating is coated in substrate, then 5s is processed in 120 DEG C, anti-mildew fresh-keeping coating is obtained.
Embodiment 6
Embodiment 6 is substantially the same manner as Example 4, and difference is that the mould inhibitor of embodiment 6 replaces with Hinokitiol and resists Bad hematic acid potassium, and the mass ratio of Hinokitiol and potassium ascorbate is 0.67:1；Anti-mildew fresh-keeping coating is coated in substrate, then at 80 DEG C of process 8s, obtain anti-mildew fresh-keeping film.
Embodiment 7
Embodiment 7 is substantially the same manner as Example 4, and difference is that the mould inhibitor of embodiment 7 replaces with allicin and water Poplar bacterium amine, and the mass ratio of allicin and trichlamide is 1.5:1.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.

Claims (10)

1. a kind of anti-mildew fresh-keeping film, it is characterised in that the anti-mildew fresh-keeping coating including basic unit and in the basic unit, it is described anti- The raw material of mould fresh-keeping coating is anti-mildew fresh-keeping coating, and anti-mildew fresh-keeping coating percentage composition by weight includes following component：Tree Fat 20%～60%, solvent 30%～70%, mould inhibitor 0.5%～10% and auxiliary agent 0.3%～5%, wherein the resin is Polyurethane, acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinilidene dichloroethylene, ethene-vinyl acetate At least one in lipin polymer, polyvinyl acetate copolymer and vinylacetate-acrylate copolymer, the solvent is water With at least one in ethanol.
2. anti-mildew fresh-keeping film as claimed in claim 1, it is characterised in that the acrylic acid esters co-polymer is selected from metering system Sour methyl esters-ethyl acrylate-acrylic acid acrylate copolymer, methyl methacrylate-butyl acrylate-acrylic copolymer, first At least one in base methyl acrylate-acrylic acid butyl ester-acrylic acid-N hydroxymethyl acrylamide copolymer.
3. anti-mildew fresh-keeping film as claimed in claim 1, it is characterised in that the mould inhibitor is natural extract class mould inhibitor, The natural extract class mould inhibitor selected from gingerol, catechin, citric acid, allicin, shitosan, sorbic acid, turmeric alcohol, At least one in cinnamomum camphora essential oil, Meng's ancestor's bamboo extract, Hinokitiol and nisin.
4. anti-mildew fresh-keeping film as claimed in claim 3, it is characterised in that the resin is acrylic acid esters co-polymer, poly- second Enol, polyvinylidene chloride, modified polyvinilidene dichloroethylene, ethylene-vinyl acetate analog copolymer, polyvinyl acetate copolymer During with least one in vinylacetate-acrylate copolymer, anti-mildew fresh-keeping coating percentage composition by weight is also included not Nertralizer more than 3%, the nertralizer is at least one in sodium acid carbonate, triethylamine and ammoniacal liquor.
5. anti-mildew fresh-keeping film as claimed in claim 1, it is characterised in that it is mould proof that the mould inhibitor is that non-natural extracts species Agent, the non-natural extract species mould inhibitor selected from sodium Diacetate, potassium sorbate, sodium sorbate, potassium citrate, sodium citrate, Calcium propionate, sodium ascorbate, potassium ascorbate, sodium salicylate, trichlamide, dodecyl alanine, sodium isoascorbate, card At least one during pine, nipagin esters, fumaric acid and bacteriolyze are mould.
6. anti-mildew fresh-keeping film as claimed in claim 1, it is characterised in that the mould inhibitor be natural extract class mould inhibitor and Non-natural extracts two kinds of species mould inhibitor, and the natural extract class mould inhibitor and the non-natural extract the matter of species mould inhibitor Amount is than being 0.4～1.5:1.
7. anti-mildew fresh-keeping film as claimed in claim 1, it is characterised in that the thickness of the anti-mildew fresh-keeping coating is 0.5～10 μ m。
8. the anti-mildew fresh-keeping film as described in any one of claim 1～7, it is characterised in that the basic unit is PET film, PP thin Film, PA6 films, eva film, EVOH films, PVA film or PLA films.
9. a kind of preparation method of anti-mildew fresh-keeping film, it is characterised in that comprise the steps：
Anti-mildew fresh-keeping coating is prepared, the preparation of the anti-mildew fresh-keeping coating comprises the steps：Raw material is provided, percentage by weight contains Amount includes：Resin 20%～60%, solvent 30%～70%, mould inhibitor 0.5%～10% and auxiliary agent 0.3%～5%；Wherein institute State resin for polyurethane, acrylic acid esters co-polymer, polyvinyl alcohol, polyvinylidene chloride, modified polyvinilidene dichloroethylene, ethene- At least one in vinyl acetate lipin polymer, polyvinyl acetate copolymer and vinylacetate-acrylate copolymer, it is described Solvent is at least one in water and ethanol；The resin, the solvent and the auxiliary agent are well mixed, mixed liquor is obtained； The mixed liquor and the mould inhibitor are well mixed, the anti-mildew fresh-keeping coating is obtained；
The anti-mildew fresh-keeping coating is coated in basic unit and carrying out heat treatment makes the anti-mildew fresh-keeping coating form anti-mildew fresh-keeping Coating, obtains the anti-mildew fresh-keeping film.
10. the preparation method of anti-mildew fresh-keeping film as claimed in claim 9, it is characterised in that the system of the anti-mildew fresh-keeping coating In standby step, the mould inhibitor adds the mixed liquor to mix with the mixed liquor so that mode is added dropwise.
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