CN108384092A - A kind of safe antibacterial ring size protects fruit-vegetable plastic wrap and preparation method thereof - Google Patents
A kind of safe antibacterial ring size protects fruit-vegetable plastic wrap and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of safe antibacterial ring sizes to protect fruit-vegetable plastic wrap and preparation method thereof, includes the raw material of following parts by weight：60 70 parts of hybrid resin, 46 parts of antibacterial additive, 57 parts of nano material, 0.4 0.8 parts of polyphenol of compounding, 35 parts of chitosan, 12 parts of coupling agent, 12 parts of antioxidant, 12 parts of toughener, 0.5 1 parts of ultraviolet screener, 48 parts of fire retardant, 57 parts of auxiliary agent of increasing property, 13 parts of starch, 24 parts of acrylic emulsion.The present invention has excellent food packaging anti-bacterial refreshing performance, material non-toxic, tasteless, contactless corrosivity, effectively extend the storage period of fruits and vegetables, in addition tensile strength and softness are also more superior, the raw material components that the present invention uses simultaneously are safe and reliable, and environmentally protective, cost is relatively low, technique is concise, has higher practical value and good application prospect.
Description
Technical field
The present invention relates to postharvest technology of fruits and vegetables fields, and in particular to a kind of safe antibacterial ring size protects fruit-vegetable plastic wrap and its preparation
Method.
Background technology
Preservative film is a kind of plastic packing product, is usually made up, is mainly used for micro- of polymerisation using ethylene by masterbatch
The occasions such as the heating of wave stove food, refrigerator food preserve, fresh and prepared food packaging, family life, supermarket sales field, hotel and
Industrial food packaging applications are all widely used.Different according to material therefor and addition plasticiser, preservative film is divided into more
Type is applicable to different occasions.The preservative film feature convenient, economic, beautiful with it receives the favor of people.So
And due to being generally added to plasticiser in process of production, preservative film also receives the influence of health the concern of people.
There are the following problems for existing preservative film：One body problem, polyvinyl chloride are inevitably present remaining when polymerization
Vinyl chloride monomer (VCM), concentration over-standard will cause human body to seriously endanger (damage nervous system, liver and embryo)；Additive
Problem, Polrvinyl chloride preservative film in production need that various additives (stabilizer, plasticizer etc.), their Long Term Contacts are added
Oil-containing food, when especially summer temp is higher, it is easy to which the migration precipitation from preservative film is penetrated into and remained in food, to people
Class health causes damages；Problem of bacteria, existing preservative film do not have bactericidal property, may increase the bacterium growth rate of fruits and vegetables,
The preservative film or freshness protection package of current material, freshness date is usually shorter, cannot satisfy the use demand.
Invention content
In view of the drawbacks of the prior art, the object of the present invention is to provide a kind of safe antibacterial ring sizes to protect fruit-vegetable plastic wrap, the guarantor
There is fresh film excellent food packaging anti-bacterial refreshing performance, material non-toxic, tasteless, contactless corrosivity effectively to extend fruits and vegetables
Storage period, tensile strength and softness are also more superior in addition, while the raw material components that the present invention uses are safe and reliable, green
Colour circle is protected, and cost is relatively low, and technique is concise, has higher practical value and good application prospect.
The present invention solves technical problem and adopts the following technical scheme that：
The present invention provides a kind of safe antibacterial ring sizes to protect fruit-vegetable plastic wrap, includes the raw material of following parts by weight：
60-70 parts of hybrid resin, additive 4-6 parts antibacterial, 5-7 parts of nano material, 0.4-0.8 parts of polyphenol of compounding, chitosan 3-5
Part, 1-2 parts of coupling agent, 1-2 parts of antioxidant, 1-2 parts of toughener, 0.5-1 parts of ultraviolet screener, 4-8 parts of fire retardant, increasing property help
5-7 parts of agent, 1-3 parts of starch, 2-4 parts of acrylic emulsion.
Preferably, the safe antibacterial ring size protects the raw material that fruit-vegetable plastic wrap includes following parts by weight：
65 parts of hybrid resin, 5 parts of antibacterial additive, 6 parts of nano material, 0.6 part of polyphenol of compounding, 4 parts of chitosan, coupling agent 1.5
Part, 1.5 parts of antioxidant, 1.5 parts of toughener, 0.8 part of ultraviolet screener, 6 parts of fire retardant, 6 parts of auxiliary agent of increasing property, 2 parts of starch, third
3 parts of olefin(e) acid lotion.
Preferably, the hybrid resin is polyvinyl resin, epoxy resin, SEBS resins according to weight ratio 5:2:1 composition
Mixture.
Preferably, the antibacterial additive preparation method is：By aloe, Dalmatian chrysanthemum, radix scutellariae, tea tree, folium artemisiae argyi according to weight
Than 3:4:1:2:1 is added in pulverizer and crushes, and is added in the ethanol solution that mass fraction is 40%, is sent into ultrasonic extractor
In, refluxed evaporator has obtained mixing powdery substance both after extracting solution is filtered.
Preferably, the preparation method of nano material is：By nano silicon dioxide, nano-titanium dioxide and nano zine oxide
According to weight ratio 1:2:The silane coupling agent Kh550 of the epoxidized soybean oil, 6% that are equivalent to its weight 1% is added in 1 mixing, is put into and pinches
It closes in kettle, temperature is controlled at 70 DEG C, is stirred to react 20-30 minutes, after dry, is crushed to obtain the final product.
Preferably, the compounding polyphenol is tea polyphenols, apple polyphenol according to weight ratio 2:The mixture of 1 composition；
The fire retardant is magnesium hydroxide and aluminium hydroxide according to 2:The mixture of 3 compositions.
Preferably, the coupling agent is γ-aminopropyl triethoxysilane, γ-methacryloxypropyl front three
One kind in oxysilane, vinyltriethoxysilane；
The antioxidant is butylated hydroxy anisole, and the toughener is acrylic polymer, the ultraviolet screener
For one kind in UV-531, UV-2908.
Preferably, the increasing property auxiliary agent is gelatin, guar gum, agar and gelatine according to weight ratio 1:1:2:4 compositions mix
Close object
The present invention also provides the preparation methods that a kind of safe antibacterial ring size protects fruit-vegetable plastic wrap, include the following steps：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 10-20 minutes at will being 65-75 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds and receive
Rice material, antibacterial additive, which stir 10-20 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, in the case where temperature is 40-50 DEG C
Stirring 35-45 minutes, speed of agitator are that 250-350r/min obtains mixture B；
Step 4, it is 120-140 DEG C that hybrid resin, antioxidant, toughener, ultraviolet screener, which are added in reaction kettle in temperature,
Lower reaction 20-30 minutes adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continues to stir
It mixes and obtains within 25-35 minutes mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
120-130 DEG C of melting temperature is spent, 2nd area, three area's melt zone temperature are 140-160 DEG C, and die temperature is between 170-180 DEG C, mould
Mouth gap is less than 1.0mm, single screw rod rotating speed 35-45 r/min, the cooling safe antibacterial ring size guarantor's preserving fruit and vegetable utilizing cut up to invention
Film.
Preferably, the preparation process of the safe antibacterial ring size guarantor fruit-vegetable plastic wrap is：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 15 minutes at will being 70 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds a nanometer material
Material, antibacterial additive, which stir 15 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, are stirred at being 45 DEG C in temperature
40 minutes, speed of agitator was that 300r/min obtains mixture B；
Step 4, it is anti-at will being 130 DEG C in temperature in hybrid resin, antioxidant, toughener, ultraviolet screener addition reaction kettle
It answers 25 minutes, adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continue stirring 30 minutes
Obtain mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
1 DEG C or so of melting temperature is spent, 2nd area, three area's melt zone temperature are 150 DEG C, and at 175 DEG C, die gap is less than die temperature
1.0mm, single screw rod rotating speed 40r/min, cooling cut protect fruit-vegetable plastic wrap up to the safe antibacterial ring size of invention.
Compared with prior art, the present invention has following advantageous effect：
（1）A kind of safe antibacterial ring size of the present invention protects the antibacterial additive of fruit-vegetable plastic wrap addition, and fruit and vegetable surfaces can be inhibited thin
The growth of bacterium, extends the storage period of fruits and vegetables, while using vegetal fungicide, avoids chemical bactericide to human body
Harm, green safe environmental protection are effectively extracted beneficiating ingredient, greatly reduce material in addition using ultrasonic wave extraction after crushing
Waste, improve utilization rate.
（2）A kind of safe antibacterial ring size of the present invention protects the nano material added in fruit-vegetable plastic wrap, predominantly nano-silica
SiClx, nano-titanium dioxide and nano zine oxide, on the one hand its on the other hand also have preferable anti-with certain bactericidal effect
The effect of light aging, UV resistant irradiation, can improve fresh-keeping effect, while having carried out modified operation to nano material so that
Degree of adhesion enhancing between material and other components, improves the consistency of film surface.
（3）A kind of safe antibacterial ring size of the present invention protects the plant extracts that fruit-vegetable plastic wrap uses, and predominantly aloe is extracted
The mixture of object, pomegranate rind extract, tea polyphenol extract object composition, extract can directly be bought, derive from a wealth of sources, and peace is used
Entirely, without any side effects and have biological degradability, have antibacterial, desinsection, resisting pathogenic microbes and sterilization and anticorrosion effect, have
Effect increases effect of the present invention.
（4）A kind of safe antibacterial ring size of the present invention protects fruit-vegetable plastic wrap and uses compounding polyphenol for tea polyphenols, apple polyphenol, and two
Person's compound action also has bacteriostasis, such as to staphylococcus, Escherichia coli, hay bacillus in addition to antioxidation
There are inhibiting effect, the peculiar smell in the adsorbable food of tea polyphenols that there is certain deodorization；A variety of fruits and vegetables such as tomato, apple, peach
Pathogen has good inhibiting effect in storage, can significantly improve the healthy fruit during fruit vegetables storing, and can keep
Fruits and vegetables appearance.
（5）The antioxidant that a kind of safe antibacterial ring size of the present invention protects fruit-vegetable plastic wrap addition can greatly improve the resistance to of material
Oxidation susceptibility, the ultraviolet screener of addition can improve the light aging resisting property of material；The increasing auxiliary agent of addition is gelatin, Guar
Glue, agar and gelatine, mixing starch can coordinate resin material to improve the tension of preservative film, and on the other hand its is nontoxic,
Safety and sanitation avoid other adhesion promoters to the possible harm of human body.
（6）A kind of safe antibacterial ring size of the present invention is protected fruit-vegetable plastic wrap and is made with polyvinyl resin, epoxy resin, SEBS resins
Based on, modification that can be by SEBS resins to polyvinyl resin, epoxy resin, can greatly improve material weatherability,
Heat resistance and compression resistant deformation performance.
（7）A kind of safe antibacterial ring size of the present invention, which protects fruit-vegetable plastic wrap, has excellent food packaging anti-bacterial refreshing performance,
Material non-toxic, tasteless, contactless corrosivity, effectively extend the storage period of fruits and vegetables, in addition tensile strength and softness also compared with
To be superior, while the raw material components that the present invention uses are safe and reliable, and environmentally protective, cost is relatively low, and technique is concise, have higher
Practical value and good application prospect.
Specific implementation mode
With reference to specific embodiment, technical scheme in the embodiment of the invention is clearly and completely described, shows
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1.
A kind of safe antibacterial ring size of the present embodiment protects fruit-vegetable plastic wrap, includes the raw material of following parts by weight：
60 parts of hybrid resin, 4 parts of antibacterial additive, 5 parts of nano material, compounding 0.4 part of polyphenol, 3 parts of chitosan, 1 part of coupling agent,
1 part of antioxidant, 1 part of toughener, 0.5 part of ultraviolet screener, 4 parts of fire retardant, 5 parts of auxiliary agent of increasing property, 1 part of starch, propylene yogurt
2 parts of liquid.
Hybrid resin in the present embodiment is polyvinyl resin, epoxy resin, SEBS resins according to weight ratio 5:2:1 composition
Mixture.
Antibacterial additive preparation method in the present embodiment is：By aloe, Dalmatian chrysanthemum, radix scutellariae, tea tree, folium artemisiae argyi according to weight
Than 3:4:1:2:1 is added in pulverizer and crushes, and is added in the ethanol solution that mass fraction is 40%, is sent into ultrasonic extractor
In, refluxed evaporator has obtained mixing powdery substance both after extracting solution is filtered.
Preparation method of nano material in the present embodiment is：By nano silicon dioxide, nano-titanium dioxide and nano oxidized
Zinc is according to weight ratio 1:2:The silane coupling agent Kh550 of the epoxidized soybean oil, 6% that are equivalent to its weight 1% is added in 1 mixing, is put into
It mediates in kettle, temperature is controlled at 70 DEG C, is stirred to react 20 minutes, after dry, is crushed to obtain the final product.
Compounding polyphenol in the present embodiment is tea polyphenols, apple polyphenol according to weight ratio 2:The mixture of 1 composition；
The fire retardant is magnesium hydroxide and aluminium hydroxide according to 2:The mixture of 3 compositions.
Coupling agent in the present embodiment is γ-aminopropyl triethoxysilane；
The antioxidant is butylated hydroxy anisole, and the toughener is acrylic polymer, the ultraviolet screener
For UV-531.
Increasing auxiliary agent in the present embodiment is gelatin, guar gum, agar and gelatine according to weight ratio 1:1:2:4 compositions mix
Close object.
A kind of safe antibacterial ring size of the present embodiment protects the preparation method of fruit-vegetable plastic wrap, includes the following steps：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 10 minutes at will being 65 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds a nanometer material
Material, antibacterial additive, which stir 10 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, in the case where temperature is 40-50 DEG C
Stirring 35 minutes, speed of agitator are that 250r/min obtains mixture B；
Step 4, it is anti-at will being 120 DEG C in temperature in hybrid resin, antioxidant, toughener, ultraviolet screener addition reaction kettle
It answers 20 minutes, adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continue stirring 25 minutes
Obtain mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
120 DEG C of melting temperature is spent, 2nd area, three area's melt zone temperature are 140 DEG C, and between 170 DEG C, die gap is less than die temperature
1.0mm, 35 r/min of single screw rod rotating speed, cooling cut protect fruit-vegetable plastic wrap up to the safe antibacterial ring size of invention.
Embodiment 2.
A kind of safe antibacterial ring size of the present embodiment protects fruit-vegetable plastic wrap, includes the raw material of following parts by weight：
70 parts of hybrid resin, 6 parts of antibacterial additive, 7 parts of nano material, compounding 0.8 part of polyphenol, 5 parts of chitosan, 2 parts of coupling agent,
2 parts of antioxidant, 2 parts of toughener, 1 part of ultraviolet screener, 8 parts of fire retardant, 7 parts of auxiliary agent of increasing property, 3 parts of starch, acrylic emulsion 4
Part.
Hybrid resin in the present embodiment is polyvinyl resin, epoxy resin, SEBS resins according to weight ratio 5:2:1 composition
Mixture.
Antibacterial additive preparation method in the present embodiment is：By aloe, Dalmatian chrysanthemum, radix scutellariae, tea tree, folium artemisiae argyi according to weight
Than 3:4:1:2:1 is added in pulverizer and crushes, and is added in the ethanol solution that mass fraction is 40%, is sent into ultrasonic extractor
In, refluxed evaporator has obtained mixing powdery substance both after extracting solution is filtered.
Preparation method of nano material in the present embodiment is：By nano silicon dioxide, nano-titanium dioxide and nano oxidized
Zinc is according to weight ratio 1:2:The silane coupling agent Kh550 of the epoxidized soybean oil, 6% that are equivalent to its weight 1% is added in 1 mixing, is put into
It mediates in kettle, temperature is controlled at 70 DEG C, is stirred to react 30 minutes, after dry, is crushed to obtain the final product.
Compounding polyphenol in the present embodiment is tea polyphenols, apple polyphenol according to weight ratio 2:The mixture of 1 composition；
The fire retardant is magnesium hydroxide and aluminium hydroxide according to 2:The mixture of 3 compositions.
Coupling agent in the present embodiment is γ-methacryloxypropyl trimethoxy silane；
The antioxidant is butylated hydroxy anisole, and the toughener is acrylic polymer, the ultraviolet screener
For UV-2908.
Increasing auxiliary agent in the present embodiment is gelatin, guar gum, agar and gelatine according to weight ratio 1:1:2:4 compositions mix
Close object.
A kind of safe antibacterial ring size of the present embodiment protects the preparation method of fruit-vegetable plastic wrap, includes the following steps：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 20 minutes at will being 75 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds a nanometer material
Material, antibacterial additive, which stir 20 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, in the case where temperature is 40-50 DEG C
Stirring 45 minutes, speed of agitator are that 350r/min obtains mixture B；
Step 4, it is anti-at will being 140 DEG C in temperature in hybrid resin, antioxidant, toughener, ultraviolet screener addition reaction kettle
It answers 30 minutes, adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continue stirring 35 minutes
Obtain mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
130 DEG C of melting temperature is spent, 2nd area, three area's melt zone temperature are 160 DEG C, and between 180 DEG C, die gap is less than die temperature
1.0mm, 45 r/min of single screw rod rotating speed, cooling cut protect fruit-vegetable plastic wrap up to the safe antibacterial ring size of invention.
Embodiment 3.
A kind of safe antibacterial ring size of the present embodiment protects fruit-vegetable plastic wrap, includes the raw material of following parts by weight：
65 parts of hybrid resin, 5 parts of antibacterial additive, 6 parts of nano material, 0.6 part of polyphenol of compounding, 4 parts of chitosan, coupling agent 1.5
Part, 1.5 parts of antioxidant, 1.5 parts of toughener, 0.8 part of ultraviolet screener, 6 parts of fire retardant, 6 parts of auxiliary agent of increasing property, 2 parts of starch, third
3 parts of olefin(e) acid lotion.
Hybrid resin in the present embodiment is polyvinyl resin, epoxy resin, SEBS resins according to weight ratio 5:2:1 composition
Mixture.
Antibacterial additive preparation method in the present embodiment is：By aloe, Dalmatian chrysanthemum, radix scutellariae, tea tree, folium artemisiae argyi according to weight
Than 3:4:1:2:1 is added in pulverizer and crushes, and is added in the ethanol solution that mass fraction is 40%, is sent into ultrasonic extractor
In, refluxed evaporator has obtained mixing powdery substance both after extracting solution is filtered.
Preparation method of nano material in the present embodiment is：By nano silicon dioxide, nano-titanium dioxide and nano oxidized
Zinc is according to weight ratio 1:2:The silane coupling agent Kh550 of the epoxidized soybean oil, 6% that are equivalent to its weight 1% is added in 1 mixing, is put into
It mediates in kettle, temperature is controlled at 70 DEG C, is stirred to react 25 minutes, after dry, is crushed to obtain the final product.
Compounding polyphenol in the present embodiment is tea polyphenols, apple polyphenol according to weight ratio 2:The mixture of 1 composition；
The fire retardant is magnesium hydroxide and aluminium hydroxide according to 2:The mixture of 3 compositions.
Coupling agent in the present embodiment is vinyltriethoxysilane；
The antioxidant is butylated hydroxy anisole, and the toughener is acrylic polymer, the ultraviolet screener
For UV-531.
Increasing auxiliary agent in the present embodiment is gelatin, guar gum, agar and gelatine according to weight ratio 1:1:2:4 compositions mix
Close object.
A kind of safe antibacterial ring size of the present embodiment protects the preparation method of fruit-vegetable plastic wrap, includes the following steps：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 15 minutes at will being 70 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds a nanometer material
Material, antibacterial additive, which stir 15 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, are stirred at being 45 DEG C in temperature
40 minutes, speed of agitator was that 300r/min obtains mixture B；
Step 4, it is anti-at will being 130 DEG C in temperature in hybrid resin, antioxidant, toughener, ultraviolet screener addition reaction kettle
It answers 25 minutes, adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continue stirring 30 minutes
Obtain mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
1 DEG C or so of melting temperature is spent, 2nd area, three area's melt zone temperature are 150 DEG C, and at 175 DEG C, die gap is less than die temperature
1.0mm, single screw rod rotating speed 40r/min, cooling cut protect fruit-vegetable plastic wrap up to the safe antibacterial ring size of invention.
The tomato that fruit-vegetable plastic wrap processing is protected with safe antibacterial ring size made from the above various embodiments is 18 in temperature
DEG C, air humidity be 50%-60% under the conditions of preserve 5 days result it is as follows：
| Weight-loss ratio | Healthy fruit | |
| Embodiment 1 | 7.2% | 89.4% |
| Embodiment 2 | 7.3% | 90.5% |
| Embodiment 3 | 7.1% | 91.2% |
| Market preservative film | 13.4% | 65% |
A kind of safe antibacterial ring size of the present invention, which protects fruit-vegetable plastic wrap, has an excellent food packaging anti-bacterial refreshing performance, material without
Malicious, tasteless, contactless corrosivity, effectively extends the storage period of fruits and vegetables, and tensile strength and softness are also more superior in addition,
The raw material components that the present invention uses simultaneously are safe and reliable, and environmentally protective, cost is relatively low, and technique is concise, have higher practical valence
Value and good application prospect.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (10)
1. a kind of safe antibacterial ring size protects fruit-vegetable plastic wrap, which is characterized in that include the raw material of following parts by weight：
60-70 parts of hybrid resin, additive 4-6 parts antibacterial, 5-7 parts of nano material, 0.4-0.8 parts of polyphenol of compounding, chitosan 3-5
Part, 1-2 parts of coupling agent, 1-2 parts of antioxidant, 1-2 parts of toughener, 0.5-1 parts of ultraviolet screener, 4-8 parts of fire retardant, increasing property help
5-7 parts of agent, 1-3 parts of starch, 2-4 parts of acrylic emulsion.
2. a kind of safe antibacterial ring size according to claim 1 protects fruit-vegetable plastic wrap, which is characterized in that the safe antibacterial ring size
Protect the raw material that fruit-vegetable plastic wrap includes following parts by weight：
65 parts of hybrid resin, 5 parts of antibacterial additive, 6 parts of nano material, 0.6 part of polyphenol of compounding, 4 parts of chitosan, coupling agent 1.5
Part, 1.5 parts of antioxidant, 1.5 parts of toughener, 0.8 part of ultraviolet screener, 6 parts of fire retardant, 6 parts of auxiliary agent of increasing property, 2 parts of starch, third
3 parts of olefin(e) acid lotion.
3. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that the compound tree
Fat is polyvinyl resin, epoxy resin, SEBS resins according to weight ratio 5:2:The mixture of 1 composition.
4. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that described antibacterial to add
The object preparation method is added to be：By aloe, Dalmatian chrysanthemum, radix scutellariae, tea tree, folium artemisiae argyi according to weight ratio 3:4:1:2:1 is added in pulverizer
It crushes, is added in the ethanol solution that mass fraction is 40%, is sent into ultrasonic extractor, refluxed evaporator after extracting solution is filtered
Mixing powdery substance is obtained both to obtain.
5. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that the nanometer material
Preparation method for material is：By nano silicon dioxide, nano-titanium dioxide and nano zine oxide according to weight ratio 1:2:Phase is added in 1 mixing
When in its weight 1% epoxidized soybean oil, 6% silane coupling agent Kh550, be put into mediate kettle in, temperature control at 70 DEG C, stirring
Reaction 20-30 minutes crushes after dry to obtain the final product.
6. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that the compounding is more
Phenol is tea polyphenols, apple polyphenol according to weight ratio 2:The mixture of 1 composition；
The fire retardant is magnesium hydroxide and aluminium hydroxide according to 2:The mixture of 3 compositions.
7. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that the coupling agent
For γ-aminopropyl triethoxysilane, γ-methacryloxypropyl trimethoxy silane, vinyl triethoxyl silicon
One kind in alkane；
The antioxidant is butylated hydroxy anisole, and the toughener is acrylic polymer, the ultraviolet screener
For one kind in UV-531, UV-2908.
8. a kind of safe antibacterial ring size according to claim 1 or 2 protects fruit-vegetable plastic wrap, which is characterized in that the increasing property helps
Agent is gelatin, guar gum, agar and gelatine according to weight ratio 1:1:2:The mixture of 4 compositions.
9. a kind of method for preparing safe antibacterial ring size as claimed in claim 1 or 2 and protecting fruit-vegetable plastic wrap, which is characterized in that packet
Include following steps：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 10-20 minutes at will being 65-75 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds and receive
Rice material, antibacterial additive, which stir 10-20 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, in the case where temperature is 40-50 DEG C
Stirring 35-45 minutes, speed of agitator are that 250-350r/min obtains mixture B；
Step 4, it is 120-140 DEG C that hybrid resin, antioxidant, toughener, ultraviolet screener, which are added in reaction kettle in temperature,
Lower reaction 20-30 minutes adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continues to stir
It mixes and obtains within 25-35 minutes mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
120-130 DEG C of melting temperature is spent, 2nd area, three area's melt zone temperature are 140-160 DEG C, and die temperature is between 170-180 DEG C, mould
Mouth gap is less than 1.0mm, single screw rod rotating speed 35-45 r/min, the cooling safe antibacterial ring size guarantor's preserving fruit and vegetable utilizing cut up to invention
Film.
10. a kind of safe antibacterial ring size according to claim 9 protects the preparation method of fruit-vegetable plastic wrap, which is characterized in that institute
Stating step is：
Step 1 weighs prepare each component raw material as required；
Step 2 stirs 15 minutes at will being 70 DEG C in temperature in fire retardant, coupling agent addition reaction kettle, adds a nanometer material
Material, antibacterial additive, which stir 15 minutes, obtains mixture A；
Increasing property auxiliary agent, starch, acrylic emulsion, chitosan are added in blender by step 3, are stirred at being 45 DEG C in temperature
40 minutes, speed of agitator was that 300r/min obtains mixture B；
Step 4, it is anti-at will being 130 DEG C in temperature in hybrid resin, antioxidant, toughener, ultraviolet screener addition reaction kettle
It answers 25 minutes, adds the mixture A of step 2 preparation, mixture B prepared by step 3, compounding polyphenol and continue stirring 30 minutes
Obtain mixing C；
Three-section type heating Single screw extrusion inflation film manufacturing machine, area's feed zone temperature is added in mixture C made from step 4 by step 5
1 DEG C or so of melting temperature is spent, 2nd area, three area's melt zone temperature are 150 DEG C, and at 175 DEG C, die gap is less than die temperature
1.0mm, single screw rod rotating speed 40r/min, cooling cut protect fruit-vegetable plastic wrap up to the safe antibacterial ring size of invention.
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Application publication date: 20180810 |