CN103205005A - Anti-microbial and bacteriostatic preservative film and production method thereof - Google Patents

Anti-microbial and bacteriostatic preservative film and production method thereof Download PDF

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CN103205005A
CN103205005A CN2013100833294A CN201310083329A CN103205005A CN 103205005 A CN103205005 A CN 103205005A CN 2013100833294 A CN2013100833294 A CN 2013100833294A CN 201310083329 A CN201310083329 A CN 201310083329A CN 103205005 A CN103205005 A CN 103205005A
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polyoxyethylene
polyvinyl alcohol
water
preparation
preservative film
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CN103205005B (en
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崔跃飞
汤惠华
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South China University of Technology SCUT
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South China University of Technology SCUT
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Abstract

The invention relates to an anti-microbial and bacteriostatic preservative film and a production method thereof. The preservative film comprises, by weight, 50%-80% of polyving akohol with 500 to 2400 degrees of polymerization and 80% to 99% degrees of alcoholysis, 10% to 25% of water-solubility polyhydroxy plasticizer, 1% to 5% of polyoxyethylene, 1% to 5% of capacity-increase compatilizer and 5% to 15% of other assistants. The production method includes dissolving water-solubility polyhydroxy plasticizer in water with total weight consisted of 4 to 8 times formulation, adding polyving akohol, polyoxyethylene, capacity-increase compatilizer and other assistants, heating up above 95 DEG C to make the mixed solution completely dissolved in water, dispersing for 30 to 60 minutes at high speed, cooling to 50 DEG C to 70 DEG C, preparing a solution used for curtain coating and filming, and finally the preservative film can be prepared by a solution curtain coating method. The preservative film has good anti-microbial and bacteriostatic effects and functions to packed and fresh-keeping fruits and vegetables on the premise of no any extra anti-microbial and bacteriostatic chemical assistants.

Description

Has antibiotic and bacteria resistance function preservative film and preparation method thereof
Technical field
The present invention relates to a kind of functional preservative film, particularly relate to a kind of preservative film with antibiotic and bacteria resistance function and preparation method thereof.This preservative film is suitable for the fresh-keeping of daily fresh foods such as fresh fruit vegetables and stores.
Technical background
Fresh fruits and vegetables under plucking after, in fact its biological activity still exists, the g and D that under physical environment, is also continuing, but this growth is to sacrifice and the nutrition that consumes fruits and vegetables self is cost, this also is why a lot of fruits and vegetables are placed can become after for some time aging and fibrosis under plucking, and makes fruits and vegetables lose mouthfeel and nutrient; Add fruits and vegetables itself and have profuse nutrition, so also often rotted by the microbial bacterial parasitism.The aging, rotten and rotten of fruits and vegetables is the problem that the fruit freshness preserving most critical need solve.
According to incompletely statistics, the whole world has reached 30% of total amount because of the parasitic corrupt fruits and vegetables that rots of microbial bacterial every year, this is still a kind of huge waste and loss not, has also brought the hidden danger that causes personnel safety because of edible rotten fruits and vegetables to people.So the antibiotic and inhibition bacterium in the preserving fruit and vegetable utilizing process produces and breeding has very important meaning and economic worth.
Preserving fruit and vegetable utilizing commonly used at present is to adopt chemical substance treatment to carry out the fresh-keeping of sterilization sterilization and realization fruits and vegetables mostly, so be easy in fruits and vegetables remained on surface and the absorption chemical substance that is used for handling, and have a strong impact on security and the wholesomeness of fruits and vegetables.
Summary of the invention
Purpose of the present invention is exactly to be to overcome some defectives of existing in the existing preservation technique and the problem of dangerous, unhygienic property, and a kind of good refreshing effect is provided, and fresh keeping time is long self has antibiotic and bacteria resistance function preservative film and preparation method thereof.
The present invention is this to have the preservative film of antibacterial bacteriostatic function with general different fully by the design of adding chemical substances such as antibiotic bactericide, do not add any chemical substances such as antibiotic bactericide in the present invention, but the effect by environment and the condition of the breeding of microbial bacterial growth are regulated and control to reach antibacterial bacteriostatic; So can not produce the pollution of any chemical substance and residual, it is the preservative film technology of a kind of very environmental protection and safety; After namely packing with preservative film of the present invention, can make by fresh-keeping fruits and vegetables and be in the environment with bacteria growing inhibiting and breeding, thereby can reduce the infringement of microorganism and bacterium, and be not easy to occur too early rotting with putrid and deteriorated, really can play i.e. fresh-keeping (outward appearance), guarantee the quality again (nutrient).
Antibiotic and the bacteria resistance function that the preservative film of the inventive method preparation possesses does not refer to the antibiotic and bacteria resistance function of preservative film itself, but has antibiotic and bacteriostatic action and function to the fruits and vegetables after the preservative film packing that is prepared by the inventive method.
Preservative film of the present invention not only has being had antibiotic by fresh-keeping fruits and vegetables and bacteriostatic action and function, also have simultaneously other functions that general common plastics preservative film is not had, as: the needed oxygen source of breedings such as plant and microbial bacterial growth, nitrogenous source, carbon source etc. are possessed excellent barrier property, continued to breathe growth so not only can effectively relax by fresh-keeping fruits and vegetables, also suppressed breeding and the growth of microbial bacterial simultaneously; It is the preservative film of a kind of green health and safety.Realize the storage time of prolongation fruits and vegetables fully and do not occur spoiled and rotten.Reach the fresh-keeping of safety and sanitation and environmental protection.
The object of the invention is achieved through the following technical solutions:
A kind of have antibiotic and the preparation method bacteria resistance function preservative film, it is dissolved in prescription to water-soluble poly-hydroxy class softening agent earlier and forms in the 4-8 water doubly of gross weight, add polyvinyl alcohol, polyoxyethylene, increase-volume compatilizer and auxiliary agent then, and be heated to more than 95 ℃ soluble in water fully, high speed dispersion 30-60 minute, be cooled to 50-70 ℃, prepare the solution for casting film-forming; Gained is used for the solution of casting film-forming through the steel band of die head curtain coating to the curtain coating production line, is dried to through 120-180 ℃ dry drying tunnel to have antibiotic and the bacteria resistance function preservative film again;
By mass percentage, the consisting of of each raw material in the described prescription: polyvinyl alcohol 50-80%, water-soluble poly-hydroxy class softening agent 10-25%, polyoxyethylene 1-5%, increase-volume compatilizer 1-5%, auxiliary agent 5-15%;
Further optimize, described polyvinyl alcohol is that the polymerization degree is at 500-2400; Alcoholysis degree is at 80%-99% polyvinyl alcohol Industrial products;
Described water-soluble poly-hydroxy class softening agent is water-soluble polyol or the water-soluble poly-hydroxy class material that contains the above nontoxic free from extraneous odour of two hydroxyls or two hydroxyls;
Described polyoxyethylene is for hanging down the polyoxyethylene of sticking or medium viscosity;
Described increase-volume compatilizer refers to the nonionogenic tenside of hydrophile-lipophile balance value 〉=9;
Described auxiliary agent is one or more in superfine talcum powder, ultra-fine precipitates method white carbon black, aerosil, micronized polyethylene wax and the superfine polypropylene wax powder;
Described auxiliary agent also comprises the film forming auxiliary addition agent; As: defoamer, flow agent, releasing agent etc.; These auxiliary agents are based on all kinds of derived products of water-based organic silicon modified by polyether oil.These products can be selected from the series product of Silok Chemical-Si Luoke chemistry and Silok Polymer-Si Luoke high molecular polymer company.
In described selection of auxiliary superfine talcum powder, ultra-fine precipitates method white carbon black, aerosil, micronized polyethylene wax and the superfine polypropylene wax powder one or more; After such superfine powder is dispersed in the film, it is certain uneven to allow film surface form, and these uneven just can making at the film surface very thin layer of air of absorption realize between film and the film isolating, thereby reach adhesion and easy opening between the film.This analog assistant mainly is ultra-fine inert inorganic powder and macromolecule wax powder of inertia etc.
Further, the polymerization degree of described polyvinyl alcohol is that 500-2400, alcoholysis degree are 80%-99%.
Described polyvinyl alcohol is one or more in polyvinyl alcohol-0588, polyvinyl alcohol-0580, polyvinyl alcohol-1788, polyvinyl alcohol-2088, polyvinyl alcohol-2288, polyvinyl alcohol-2488 and polyvinyl alcohol-1799, polyvinyl alcohol-2099, polyvinyl alcohol-2299 and the polyvinyl alcohol-2499.
Described water-soluble poly-hydroxy class softening agent is one or more in glycerol, polyoxyethylene glycol-200, polyoxyethylene glycol-400, polyoxyethylene glycol-1000, polyoxyethylene glycol-2000, polyoxyethylene glycol-6000 and polyoxyethylene glycol-10000, sorbyl alcohol and the TriMethylolPropane(TMP).This water-soluble poly-hydroxy softening agent is nonpoisonous and tasteless.Similarity and major ingredient polyvinyl alcohol that this class poly-hydroxy class material and major ingredient polyvinyl alcohol have on the chemical structure all have splendid consistency; Enter as low molecular polyhydroxy substance simultaneously and can effectively unfold the polyvinyl alcohol macromolecular chain behind the polyvinyl alcohol and reach plasticization effect, and make polyvinyl alcohol realize that soft flexible reaches the plasticising purpose.
Described polyoxyethylene is for hanging down the polyoxyethylene of sticking or medium viscosity, and its molecular weight ranges is 10 5-10 6Polyoxyethylene is not still planted the very easily water-soluble polymer of non-toxic and safe, and with the consistency of other resins might as well; Wherein maximum being characterised in that himself has excellent anti-bacterium and the erosion of microorganism.
Described increase-volume compatilizer is Vinlub 73, polyoxyethylene laurel ether, polyoxyethylene (4EO) sorbitan mono-laurate, polyoxyethylene (24EO) cholesterol ethers, polyoxypropylene (20PO) wool alcohol ether, polyoxyethylene 20 sorbitan monolaurate, polyoxyethylene (20EO) sorbitan monostearate, polyoxyethylene (16EO) wool alcohol ether, polyoxyethylene (20EO) sorbitan monooleate, the polyoxyethylene glycol monopalmitate, polyoxyl 40 stearate, Vinlub 73 or polyoxyethylene (20EO) sorbitan mono-laurate.This class material is the higher nonionogenic tenside of a class hydrophile-lipophile balance value, and the agent of hydrophile-lipophile balance value higher surface activity all has higher compatibilization, mainly is to come some other component materials in water-based system of homogeneous dispersion by this class tensio-active agent.
By percentage to the quality, the solid content of described solution for casting film-forming is 15-25%.The solid content of the best of described solution for casting film-forming is about 18-20%.Solution solid content concentration is too low, and the efficient of moulding film forming is low, and the viscosity height of the too high solution of solid content concentration is unfavorable for froth breaking and the casting film-forming of solution.
The present invention also provides by what above-mentioned preparation method made a kind ofly has antibiotic and preservative film bacteria resistance function.
Compare with existing preservative film, the present invention has following advantageous feature:
1, uses preservative film of the present invention, do not need to use any chemical substance and sanitas that fruits and vegetables is handled, so the fruits and vegetables surface can residual any chemical substance, make the safer health of fruits and vegetables;
2, the preservative film of the present invention's preparation has antibiotic and bacteriostatic action and function, and without putrefaction is rotten so the fruits and vegetables after the packing can be deposited for a long time;
3, preservative film of the present invention is except the obstruct to obnoxious flavour, but can keep the very high amount of penetrating to penetrating of aqueous vapor, be unlikely to macerate mashedly because of moisture content so the fruits and vegetables after the packing can freely breathe, long storage time can keep the dry and comfortable of fruits and vegetables surface always;
4, easy to use, get final product wanting fresh-keeping fruits and vegetables directly to pack with preservative film in the use, and need not special processing;
5, the fruits and vegetables after packing with preservative film of the present invention need not special refrigerated condition and just can reach very long fresh-keeping guaranteeing the quality the time;
This of the present invention's preparation has antibiotic and preservative film bacteria resistance function, be applicable to the daily fresh-keeping preservative film of fruits and vegetables kind, especially be difficult to fresh-keeping green vegetable kind for some, have excellent fresh-keeping effect as green vegetables kinds such as cabbage heart, Chinese cabbages.Be the preservative film of kind of high effective green environmentally friendly, very easy to use and safety and sanitation.
Embodiment
The invention will be further described below in conjunction with embodiment, but the invention process method is not limited thereto.
Embodiment 1
Polyvinyl alcohol-1799:11.00Kg
Polyvinyl alcohol-1788:3.00Kg
Polyoxyethylene 0.95 Kg
Glycerol: 2.50Kg
TriMethylolPropane(TMP): 1.00Kg
Polyoxyethylene laurel ether: 0.40Kg
Defoamer Silok 4,650 0.05 Kg
Flow agent Silok 8,255 0.30 Kg
Releasing agent Silok 413P 0.10 Kg
Superfine talcum powder: 0.60Kg
Water: 80.10Kg
More than each the group respectively the metering, earlier soluble in water glycerol and TriMethylolPropane(TMP), then polyvinyl alcohol-1799 and polyvinyl alcohol-1788, polyoxyethylene, polyoxyethylene laurel ether, superfine talcum powder, each analog assistant are added to the water, and be heated to more than 95 ℃ soluble in water fully, high speed dispersion 30 minutes, be cooled to 60 ℃, prepare the solution for casting film-forming.The solution of preparation is cast on the steel band through casting head, through 120-180 ℃ drying tunnel drying and forming-film.120-180 ℃ drying tunnel drying and forming-film refers to the scope that drying tunnel is sectional temperature-controlled, and the temperature of four drying zones is respectively: 120 ℃, 150 ℃, 180 ℃ and 160 ℃.
Pack the cabbage heart of 500g with the preservative film of this embodiment preparation, under the condition of 4 ℃ of relative humidity RH-50%, stores after 7 days, by GB GB4789.2-2010 method detection total number of bacterial colony be: 51*10 5(CFU/g); The total number of bacterial colony that stores under the same conditions after 7 days with the seal-packed cabbage heart of common plastics freshness protection package is 178*10 5(CFU/g); The initial bacterium colony of blank sample adds up to 99*10 5(CFU/g).Just have the antibiotic and seal-packed cabbage heart of preservative film bacteria resistance function after preserving 7 days with present embodiment is this, total number of bacterial colony does not only increase, and has obtained effective inhibition on the contrary, and total number of bacterial colony is reduced to 51.51%(with respect to blank sample, down with.); And the cabbage heart total number of bacterial colony of common plastics freshness protection package packing increases to 179.79%; Illustrate that preservative film of the present invention has significantly antibiotic and bacteriostatic action.
  
Embodiment 2
Polyvinyl alcohol-2299:12.50Kg
Polyoxyethylene 0.80Kg
Glycerol: 2.00Kg
Polyoxyethylene glycol-400 1.50Kg
Polyoxyethylene glycol-6000 1.00Kg
Defoamer Silok-4500 0.10Kg
Flow agent Silok 8,255 0.50 Kg
Releasing agent Silok 2193 0.20Kg
Vinlub 73: 0.30Kg
Ultra-fine precipitates method white carbon black: 1.20Kg
Water: 80.00Kg
More than each the group respectively the metering, earlier glycerol, polyoxyethylene glycol-400 and polyoxyethylene glycol-6000 are added to the water, then polyvinyl alcohol-2299, polyoxyethylene, Vinlub 73, ultra-fine precipitates method white carbon black and each component auxiliary agent are added to the water, and be heated to 95 ℃ complete soluble in water, high speed dispersion 30 minutes, be cooled to 50 ℃, prepare the solution for casting film-forming.The solution of preparation is cast on the steel band through casting head, through 120-180 ℃ drying tunnel drying and forming-film.120-180 ℃ drying tunnel drying and forming-film refers to the scope that drying tunnel is sectional temperature-controlled, and the temperature of four drying zones is respectively: 120 ℃, 150 ℃, 180 ℃ and 160 ℃.
The fruit corn that packs same batch of 500g with preservative film and the common plastics preservative film of this embodiment preparation respectively, under the condition of 4 ℃ of relative humidity RH-60%, store after 15 days, detect total number of bacterial colony by GB GB4789.2-2010 method and be respectively: 6*10 4(CFU/g) and 27*10 4(CFU/g); The fruit corn of packing with the common plastics freshness protection package is after the same terms stores 15 days, and total number of bacterial colony is up to 4.5 times of the fruit corn total number of bacterial colony of preservative film packing of the present invention; Equal conditions test contrast illustrates that preservative film of the present invention has significantly antibiotic and bacteriostatic action down.
?
Embodiment 3
Polyvinyl alcohol-1799:15.00Kg
Polyoxyethylene 0.80 Kg
Glycerol: 1.50Kg
Polyoxyethylene glycol-400:0.50Kg
Polyoxyethylene glycol-1000:0.50Kg
Polyoxyl 40 stearate 0.40Kg
Defoamer Silok 4,650 0.10 Kg
Flow agent Silok 8255 0.30Kg
Releasing agent Silok-81 0.20Kg
Aerosil 0.75Kg
Water: 80.00Kg
More than each the group respectively the metering, earlier glycerol, polyoxyethylene glycol-400 and polyoxyethylene glycol-1000 are added to the water, then polyvinyl alcohol-1799, polyoxyethylene, polyoxyl 40 stearate, aerosil and each component auxiliary agent are added to the water, and be heated to 95 ℃ complete soluble in water, high speed dispersion 30 minutes, be cooled to 60 ℃, prepare the solution for casting film-forming.The solution of preparation is cast on the steel band through casting head, through 120-180 ℃ drying tunnel drying and forming-film.120-180 ℃ drying tunnel drying and forming-film refers to the scope that drying tunnel is sectional temperature-controlled, and the temperature of four drying zones is respectively: 120 ℃, 150 ℃, 180 ℃ and 160 ℃.
The carambola that packs same batch of 500g with preservative film and the common plastics preservative film of this embodiment preparation under normal temperature condition, stores after 20 days respectively, is respectively by GB GB4789.2-2010 method detection total number of bacterial colony: 9.3*10 2(CFU/g) and 40*10 2(CFU/g); The fruit carambola of packing with the common plastics freshness protection package is after the same terms stores 20 days, and total number of bacterial colony is up to 4.3 times of the fruit carambola total number of bacterial colony of preservative film packing of the present invention; Equal conditions test contrast illustrates that preservative film of the present invention has significantly antibiotic and bacteriostatic action down.
 
Embodiment 4
Polyvinyl alcohol-2299:10.00Kg
Polyvinyl alcohol-1788:5.00Kg
Polyoxyethylene 0.60 Kg
Glycerol: 2.00Kg
Polyoxyethylene glycol-200:2.00Kg
Polyoxyethylene 20 sorbitan monolaurate: 0.50Kg
Defoamer Silok-4,809 0.10 Kg
Flow agent Silok-8360 0.30Kg
Releasing agent Silok-43 0.20Kg
Polyethylene micropowder wax: 0.50Kg
Water: 90.00Kg
More than each the group respectively the metering, earlier glycerol, polyoxyethylene glycol-200 are added to the water, then polyvinyl alcohol-2299, polyvinyl alcohol-1788, polyoxyethylene, polyoxyethylene 20 sorbitan monolaurate, polyethylene micropowder wax and each component auxiliary agent are added to the water, and be heated to 95 ℃ complete soluble in water, high speed dispersion 30 minutes, be cooled to 65 ℃, prepare the solution for casting film-forming.The solution of preparation is cast on the steel band through casting head, through 120-180 ℃ drying tunnel drying and forming-film.120-180 ℃ drying tunnel drying and forming-film refers to the scope that drying tunnel is sectional temperature-controlled, and the temperature of four drying zones is respectively: 120 ℃, 150 ℃, 180 ℃ and 160 ℃.
The carambola that packs same batch of 500g with preservative film and the common plastics preservative film of this embodiment preparation under the condition of 4 ℃ of relative humidity RH-40%, stores after 70 days respectively, is respectively by GB GB4789.2-2010 method detection total number of bacterial colony: 1*10 4(CFU/g) and 4*10 4(CFU/g); The fruit carambola of packing with the common plastics freshness protection package is after the same terms stores 70 days, and total number of bacterial colony is up to 400% of the fruit carambola total number of bacterial colony of preservative film packing of the present invention; Equal conditions test contrast illustrates that preservative film of the present invention has significantly antibiotic and bacteriostatic action down.
 
Embodiment 5
Polyvinyl alcohol-2099:10.00Kg
Polyvinyl alcohol-1788 3.00Kg
Polyvinyl alcohol-0588 2.00Kg
Polyoxyethylene 0.80Kg
Glycerol 2.50Kg
Sorbyl alcohol 0.50Kg
Polyoxyethylene glycol-400 1.00Kg
Polyoxyethylene glycol monopalmitate: 0.30Kg
Defoamer Silok-4680 0.10Kg
Flow agent Silok-8255 0.30Kg
Releasing agent Silok-2420 0.20Kg
Ultra-fine precipitates method white carbon black 1.20Kg
Water: 100.00Kg
More than each the group respectively the metering, earlier glycerol, sorbyl alcohol are added to the water, then polyvinyl alcohol-2099, polyvinyl alcohol-1788, polyvinyl alcohol-0588, polyoxyethylene, polyoxyethylene glycol monopalmitate, ultra-fine precipitates method white carbon black and other each component auxiliary agents are added to the water, and be heated to 95 ℃ complete soluble in water, high speed dispersion 30 minutes, be cooled to 55 ℃, prepare the solution for casting film-forming.The solution of preparation is cast on the steel band through casting head, through 120-180 ℃ drying tunnel drying and forming-film.120-180 ℃ drying tunnel drying and forming-film refers to the scope that drying tunnel is sectional temperature-controlled, and the temperature of four drying zones is respectively: 120 ℃, 150 ℃, 180 ℃ and 160 ℃.
The cabbage heart that packs same batch of 500g with preservative film and the common plastics preservative film of this embodiment preparation respectively, under the condition of 4 ℃ of relative humidity RH-60%, after storing 14 days (2 week), detect total number of bacterial colony by GB GB4789.2-2010 method and be respectively: 30*10 6(CFU/g) and 72*10 6(CFU/g); The cabbage heart of packing with the common plastics freshness protection package is after the same terms stores 14 days, and total number of bacterial colony is up to 240% of the cabbage heart total number of bacterial colony of preservative film packing of the present invention; Equal conditions test contrast illustrates that preservative film of the present invention has significantly antibiotic and bacteriostatic action down.

Claims (10)

1. one kind has antibiotic and the preparation method bacteria resistance function preservative film, it is characterized in that, earlier water-soluble poly-hydroxy class softening agent being dissolved in 4-8 doubly fills a prescription in the water of composition gross weight, add polyvinyl alcohol, polyoxyethylene, increase-volume compatilizer and other auxiliary agents then, and be heated to more than 95 ℃ soluble in water fully, high speed dispersion 30-60 minute, be cooled to 50-70 ℃, prepare the solution for casting film-forming; Gained is used for the solution of casting film-forming through the steel band of die head curtain coating to the curtain coating production line, is dried to through 120-180 ℃ dry drying tunnel to have antibiotic and the bright film of bacteria resistance function again;
The mass percent of each raw material is in the described prescription: polyvinyl alcohol 50-80%, water-soluble poly-hydroxy class softening agent 10-25%, polyoxyethylene 1-5%, increase-volume compatilizer 1-5%, auxiliary agent 5-15%;
Described water-soluble poly-hydroxy class softening agent is water-soluble polyol or the water-soluble poly-hydroxy class material that contains the above nontoxic free from extraneous odour of two hydroxyls or two hydroxyls;
Described polyoxyethylene is for hanging down the polyoxyethylene of sticking or medium viscosity;
Described increase-volume compatilizer refers to the nonionogenic tenside of hydrophile-lipophile balance value 〉=9;
Described auxiliary agent comprises one or more in superfine talcum powder, ultra-fine precipitates method white carbon black, aerosil, micronized polyethylene wax and the superfine polypropylene wax powder; Described auxiliary agent also comprises the film forming auxiliary addition agent.
2. preparation method according to claim 1, it is characterized in that: the polymerization degree of described polyvinyl alcohol is that 500-2400, alcoholysis degree are 80%-99%.
3. preparation method according to claim 2, it is characterized in that: described polyvinyl alcohol is one or more in polyvinyl alcohol-0588, polyvinyl alcohol-0580, polyvinyl alcohol-1788, polyvinyl alcohol-2088, polyvinyl alcohol-2288, polyvinyl alcohol-2488 and polyvinyl alcohol-1799, polyvinyl alcohol-2099, polyvinyl alcohol-2299 and the polyvinyl alcohol-2499.
4. preparation method according to claim 1, it is characterized in that: described water-soluble poly-hydroxy class softening agent is one or more in glycerol, polyoxyethylene glycol-200, polyoxyethylene glycol-400, polyoxyethylene glycol-1000, polyoxyethylene glycol-2000, polyoxyethylene glycol-6000 and polyoxyethylene glycol-10000, sorbyl alcohol and the TriMethylolPropane(TMP) etc.
5. preparation method according to claim 1, it is characterized in that: described increase-volume compatilizer is Vinlub 73, polyoxyethylene laurel ether, polyoxyethylene 20 sorbitan monolaurate, the polyoxyethylene cholesterol ethers, polyoxypropylene wool alcohol ether, polyoxyethylene 20 sorbitan monolaurate, polyoxyethylene 20 sorbitan monostearate, polyoxyethylene wool alcohol ether, polyoxyethylene 20 sorbitan monooleate, the polyoxyethylene glycol monopalmitate, polyoxyl 40 stearate, a kind of in Vinlub 73 or the polyoxyethylene 20 sorbitan monolaurate etc.
6. preparation method according to claim 1 is characterized in that: by percentage to the quality, the solid content of described solution for casting film-forming is 15-25%.
7. preparation method according to claim 6 is characterized in that: by percentage to the quality, the solid content of described solution for casting film-forming is 18-20%.
8. according to the described preparation method of claim 1 ~ 7, it is characterized in that: described film forming auxiliary addition agent comprises in defoamer, flow agent, the releasing agent one or more.
9. preparation method according to claim 8 is characterized in that: described film forming auxiliary addition agent is the derived product based on water-based organic silicon modified by polyether oil.
10. one kind has antibiotic and the bacteria resistance function preservative film, it is characterized in that by the described method preparation of claim 1.
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CN107746467A (en) * 2017-10-31 2018-03-02 华南理工大学 It is a kind of to use the method that repeatedly coating film-forming process prepares polyvinyl alcohol film
CN108276656A (en) * 2018-02-11 2018-07-13 盐城科迈特新材料有限公司 A kind of plastic film composite auxiliary for processing and preparation method thereof
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CN112679895A (en) * 2020-12-29 2021-04-20 陕西省石油化工研究设计院 Preparation method of multipurpose environment-friendly antibacterial film
CN114410044A (en) * 2022-01-28 2022-04-29 孙琇芳 Water-soluble vacuum packaging preservative film and using method thereof

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CN104109326A (en) * 2014-06-26 2014-10-22 华南理工大学 Anti-blocking polyvinyl alcohol film, and preparation method and application thereof
CN104151757A (en) * 2014-07-17 2014-11-19 安徽巢湖南方膜业有限责任公司 Formula of polyurethane-polyvinyl alcohol double-degradable plastic film and preparation method of polyurethane-polyvinyl alcohol double-degradable plastic film
CN104151757B (en) * 2014-07-17 2016-04-06 安徽巢湖南方膜业有限责任公司 A kind of polyethers-polyvinyl alcohol double degradation plastic film formula and preparation method thereof
CN106189014A (en) * 2016-07-25 2016-12-07 刘才裕 Disposable Spattering-proof for closet film
CN107746467A (en) * 2017-10-31 2018-03-02 华南理工大学 It is a kind of to use the method that repeatedly coating film-forming process prepares polyvinyl alcohol film
CN108276656A (en) * 2018-02-11 2018-07-13 盐城科迈特新材料有限公司 A kind of plastic film composite auxiliary for processing and preparation method thereof
CN111642560A (en) * 2020-06-15 2020-09-11 广西壮族自治区农业科学院 Fruit and vegetable fresh-keeping method
CN111642560B (en) * 2020-06-15 2023-04-18 广西壮族自治区农业科学院 Fruit and vegetable fresh-keeping method
CN112679895A (en) * 2020-12-29 2021-04-20 陕西省石油化工研究设计院 Preparation method of multipurpose environment-friendly antibacterial film
CN114410044A (en) * 2022-01-28 2022-04-29 孙琇芳 Water-soluble vacuum packaging preservative film and using method thereof

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