CN108373552A - A kind of degradable high tenacity packaging film - Google Patents
A kind of degradable high tenacity packaging film Download PDFInfo
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- 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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- 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
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- 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
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
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- 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
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- 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
- C08J2489/00—Characterised by the use of proteins; Derivatives thereof
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- 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
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- 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
- C08K5/098—Metal salts of carboxylic acids
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Abstract
The invention discloses a kind of degradable high tenacity packaging films, it is related to packing technical field of membrane, the present invention is using starch and wool as primary raw material, along with lignocellulosic, it is aided with various auxiliary agents, such formula improves the content of protein, amino acid, and packaging film obtained is made to have high protein, homoamino acid, and with high tenacity and stronger physical mechanical property, selective penetrated property and antibacterial, antioxidation；And selected raw material is green safe, is easily degraded, and so as to avoid white pollution, preserves the ecological environment.
Description
Technical field：
The present invention relates to packaging technical field of membrane, and in particular to a kind of degradable high tenacity packaging film.
Background technology：
Plastic film packaging is current fresh fruit and the upper most widely used packaging material of vegetables production.It has transparent
Property, it may be clearly seen that the situation of packaging product；It has moisture retention, it is possible to reduce the moisture loss of product increases new
Freshness；It has gas permeability, can play the role of spontaneous controlled atmosphere, extends fresh keeping time, it has leakproofness, can protect production
Product are not contaminated.
Currently, it is base that food package film used in the country, which is generally the polymer such as polyethylene, polypropylene, polyvinyl chloride,
Body, by the way that film made of the mixing such as some plasticizer, inorganic filler, antiseptic is added.On the one hand, these packaging films there is
Long disadvantage, be easy to cause white pollution, influences environment the time required to difficult to degrade or degradation；On the other hand, these packaging films
Gas permeability is bad, if the oxygen concentration in packaging film is too low or gas concentration lwevel is excessively high, fruit just will produce anaerobic respiration,
Cause the volatile materials such as ethyl alcohol, acetaldehyde accumulate, generate peculiar smell and it is different smell, reduce the flavor quality of fruit.
Invention content：
It is simple, of good preservation effect degradable technical problem to be solved by the present invention lies in a kind of preparation method is provided
High tenacity packaging film.
The technical problems to be solved by the invention are realized using technical solution below：
A kind of degradable high tenacity packaging film, is made of the raw material of following mass fraction：
60-80 parts of starch, 40-50 parts of wool, 15-20 parts of lignocellulosic, 12-18 parts of epoxidized soybean oil, nano-calcium carbonate
15-18 parts of calcium, 12-15 parts of zinc stearate, 10-12 parts of polyvinyl alcohol, 8-10 parts of algal polysaccharides, 8-10 parts of glycerine, sodium bicarbonate
6-9 parts, 5-8 parts of konjaku glucomannan, 5-8 parts of Brazil wax, 3-5 parts of sodium citrate, 3-6 parts of agar, 3-5 parts of xylitol,
2-3 parts of polyglyceryl fatty acid ester, 800-1000 parts of water.
The degradable high tenacity packaging film, the raw material of preferably following mass fraction are made：
70 parts of starch, 45 parts of wool, 18 parts of lignocellulosic, 15 parts of epoxidized soybean oil, 16 parts of nano-calcium carbonate, stearic acid
13 parts of zinc, 11 parts of polyvinyl alcohol, 9 parts of algal polysaccharides, 9 parts of glycerine, 8 parts of sodium bicarbonate, 7 parts of konjaku glucomannan, babassu
6 parts of wax, 4 parts of sodium citrate, 5 parts of agar, 4 parts of xylitol, 3 parts of polyglyceryl fatty acid ester, 900 parts of water.
The grain size of the nano-calcium carbonate is 30-50nm.
The preparation method of the degradable high tenacity packaging film, includes the following steps：
(1) wool is cleaned up with cleaning agent, then is sterilized with ultraviolet light；
(2) wool, lignocellulosic, epoxidized soybean oil are added in ultrasonic extraction tank, add the body of 5 times of weight
The dilute hydrochloric acid that the ethyl alcohol of a concentration of 85%-95% of product and the volumetric concentration of 0.2 times of weight are 10%-15%, carries through ultrasound three times
It takes, gained filtrate decompression is distilled to recover ethyl alcohol to a concentration of 55%-60%, and precipitation is filtered out to get albumen powder and ring after standing 12h
Oxygen soybean oil extracting solution；
(3) starch is added portionwise under stirring in the water measured to 5 times, forms starch slurry after mixing, then divided with quality
The alkaline solution that number is 3-5% adjusts pH value to 6-7, then heats to 60-80 DEG C of stirring 20-30min and forms uniform gelatinized corn starch
Solution；
(4) algal polysaccharides and sodium citrate is added under stirring into remaining water, it is molten that gelatinized corn starch fully is added after dissolving completely
Liquid, nano-calcium carbonate, zinc stearate and polyvinyl alcohol, mixture keep the temperature 20-25min after being warming up to 60-70 DEG C, add konjaku
Glucomannan, Brazil wax and sodium bicarbonate are continuously heating to 90-100 DEG C, and glycerine, agar, xylitol is then added and gathers
Fatty acid glyceride reacts 45-60min, and mixed solution slow cooling cools down after reaction, is cooled to room temperature addition albumen powder
With epoxidized soybean oil extracting solution, it is sufficiently mixed uniformly, finally filters into film liquid；
(5) first will be at film liquid in 3500-4000rpm/min homogenous disperse 10-15min, then base material will be coated at film liquid
On, then the dry 12-15h at 40-45 DEG C, film is taken off after dry, saves it in the closed container that ambient humidity is 55-60%
In.
Further, the cleaning agent of the step 1 is prepared from the following raw materials in parts by weight：8-12 parts of flour, salt 3-8
Part, 2-4 parts of sodium alginate, 0.5-1 parts of pectin, microcrystalline cellulose -2-5 parts of glycine.
The specific preparation method of the microcrystalline cellulose-glycine is：It is warming up to after microcrystalline cellulose, glycine are mixed
80-85 DEG C heat preservation grinding 10min, then be added deionized water until mass water content reach 80-85%, be sufficiently stirred and utilize
Microwave treater microwave reflow treatment 5min, continues microwave reflow treatment 5min after being spaced 5min, is spaced microwave after 5min again
Reflow treatment 5min, repeats operation, and controls total microwave reflow treatment in 25-35min, after treatment naturally cools to room
Temperature, gained mixture are sent into freeze drier, and micro mist is made to get microcrystalline cellulose through micronizer in dry obtained solid
Element-glycine.
The microcrystalline cellulose, glycine mass ratio in 1-5:5-10.
The beneficial effects of the invention are as follows：The present invention adds lignocellulosic, is aided with using starch and wool as primary raw material
Various auxiliary agents, such formula improve the content of protein, amino acid, and packaging film obtained is made to have high protein, high ammonia
Base acid, and with high tenacity and stronger physical mechanical property, selective penetrated property and antibacterial, antioxidation；And institute
It selects raw material green safe, is easily degraded, so as to avoid white pollution, preserve the ecological environment.
Specific implementation mode：
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
A kind of degradable high tenacity packaging film, is made of the raw material of following mass fraction：
60 parts of starch, 40 parts of wool, 15 parts of lignocellulosic, 12 parts of epoxidized soybean oil, 15 parts of nano-calcium carbonate, stearic acid
12 parts of zinc, 10 parts of polyvinyl alcohol, 8 parts of algal polysaccharides, 8 parts of glycerine, 6 parts of sodium bicarbonate, 5 parts of konjaku glucomannan, babassu
5 parts of wax, 3 parts of sodium citrate, 3 parts of agar, 3 parts of xylitol, 2 parts of polyglyceryl fatty acid ester, 800 parts of water.
The grain size of the nano-calcium carbonate is 30nm.
The preparation method of the degradable high tenacity packaging film, includes the following steps：
(1) wool is cleaned up with cleaning agent, then is sterilized with ultraviolet light；
(2) wool, lignocellulosic, epoxidized soybean oil are added in ultrasonic extraction tank, add the body of 5 times of weight
The dilute hydrochloric acid that the ethyl alcohol of product a concentration of 85% and the volumetric concentration of 0.2 times of weight are 10%, through ultrasonic extraction three times, gained filtrate
Vacuum distillation recycling ethyl alcohol filters out precipitation to get albumen powder and epoxidized soybean oil extracting solution to a concentration of 55% after standing 12h；
(3) starch is added portionwise under stirring in the water measured to 5 times, forms starch slurry after mixing, then divided with quality
Number adjusts pH value to 6 for 3% alkaline solution, then heats to 60 DEG C of stirring 20min and forms uniform gelatinized corn starch solution；
(4) algal polysaccharides and sodium citrate is added under stirring into remaining water, it is molten that gelatinized corn starch fully is added after dissolving completely
Liquid, nano-calcium carbonate, zinc stearate and polyvinyl alcohol, mixture keep the temperature 20min after being warming up to 60 DEG C, add konjak portuguese gansu polyose
Sugar, Brazil wax and sodium bicarbonate, are continuously heating to 90 DEG C, and glycerine, agar, xylitol and polyglycerol fatty acid is then added
Ester reacts 45min, and mixed solution slow cooling cools down after reaction, is cooled to room temperature and albumen powder and epoxidized soybean oil is added
Extracting solution is sufficiently mixed uniformly, finally filters into film liquid；
(5) first will be at film liquid in 3500rpm/min homogenous disperse 10min, then will be coated on base material at film liquid, then exist
Dry 12h, film is taken off after dry at 40 DEG C, is saved it in the closed container that ambient humidity is 55%.
Further, the cleaning agent of the step 1 is prepared from the following raw materials in parts by weight：8 parts of flour, 3 parts of salt, seaweed
2 parts of sour sodium, 0.5 part of pectin, 2 parts of microcrystalline cellulose-glycine.
The specific preparation method of the microcrystalline cellulose-glycine is：It is warming up to after microcrystalline cellulose, glycine are mixed
80 DEG C heat preservation grinding 10min, then be added deionized water until mass water content reach 80%, be sufficiently stirred and utilize at microwave
Device microwave reflow treatment 5min is managed, continues microwave reflow treatment 5min after being spaced 5min, again after the 5min of interval at microwave reflux
5min is managed, is repeated operation, controls total microwave reflow treatment in 25min, after treatment cooled to room temperature, gained is mixed
It closes object to be sent into freeze drier, micro mist is made to get microcrystalline cellulose-glycine through micronizer in dry obtained solid.
The microcrystalline cellulose, glycine mass ratio 1:5.
Embodiment 2
A kind of degradable high tenacity packaging film, is made of the raw material of following mass fraction：
80 parts of starch, 50 parts of wool, 20 parts of lignocellulosic, 18 parts of epoxidized soybean oil, 18 parts of nano-calcium carbonate, stearic acid
15 parts of zinc, 12 parts of polyvinyl alcohol, 10 parts of algal polysaccharides, 10 parts of glycerine, 9 parts of sodium bicarbonate, 8 parts of konjaku glucomannan, cohune
8 parts of palmitic acid wax, 5 parts of sodium citrate, 6 parts of agar, 5 parts of xylitol, 3 parts of polyglyceryl fatty acid ester, 1000 parts of water.
The grain size of the nano-calcium carbonate is 50nm.
The preparation method of the degradable high tenacity packaging film, includes the following steps：
(1) wool is cleaned up with cleaning agent, then is sterilized with ultraviolet light；
(2) wool, lignocellulosic, epoxidized soybean oil are added in ultrasonic extraction tank, add the body of 5 times of weight
The dilute hydrochloric acid that the ethyl alcohol of product a concentration of 95% and the volumetric concentration of 0.2 times of weight are 15%, through ultrasonic extraction three times, gained filtrate
Vacuum distillation recycling ethyl alcohol filters out precipitation to get albumen powder and epoxidized soybean oil extracting solution to a concentration of 60% after standing 12h；
(3) starch is added portionwise under stirring in the water measured to 5 times, forms starch slurry after mixing, then divided with quality
Number adjusts pH value to 7 for 5% alkaline solution, then heats to 80 DEG C of stirring 30min and forms uniform gelatinized corn starch solution；
(4) algal polysaccharides and sodium citrate is added under stirring into remaining water, it is molten that gelatinized corn starch fully is added after dissolving completely
Liquid, nano-calcium carbonate, zinc stearate and polyvinyl alcohol, mixture keep the temperature 25min after being warming up to 70 DEG C, add konjak portuguese gansu polyose
Sugar, Brazil wax and sodium bicarbonate, are continuously heating to 100 DEG C, and glycerine, agar, xylitol and polyglycereol fat is then added
Acid esters reacts 60min, and mixed solution slow cooling cools down after reaction, is cooled to room temperature and albumen powder and epoxy soybean is added
Oil extract liquid is sufficiently mixed uniformly, finally filters into film liquid；
(5) first will be at film liquid in 4000rpm/min homogenous disperse 15min, then will be coated on base material at film liquid, then exist
Dry 15h, film is taken off after dry at 45 DEG C, is saved it in the closed container that ambient humidity is 60%.
Further, the cleaning agent of the step 1 is prepared from the following raw materials in parts by weight：12 parts of flour, 8 parts of salt, sea
4 parts of mosanom, 1 part of pectin, 5 parts of microcrystalline cellulose-glycine.
The specific preparation method of the microcrystalline cellulose-glycine is：It is warming up to after microcrystalline cellulose, glycine are mixed
85 DEG C heat preservation grinding 10min, then be added deionized water until mass water content reach 85%, be sufficiently stirred and utilize at microwave
Device microwave reflow treatment 5min is managed, continues microwave reflow treatment 5min after being spaced 5min, again after the 5min of interval at microwave reflux
5min is managed, is repeated operation, controls total microwave reflow treatment in 35min, after treatment cooled to room temperature, gained is mixed
It closes object to be sent into freeze drier, micro mist is made to get microcrystalline cellulose-glycine through micronizer in dry obtained solid.
The microcrystalline cellulose, glycine mass ratio 5:10.
Embodiment 3
A kind of degradable high tenacity packaging film, is made of the raw material of following mass fraction：
70 parts of starch, 45 parts of wool, 18 parts of lignocellulosic, 15 parts of epoxidized soybean oil, 16 parts of nano-calcium carbonate, stearic acid
13 parts of zinc, 11 parts of polyvinyl alcohol, 9 parts of algal polysaccharides, 9 parts of glycerine, 8 parts of sodium bicarbonate, 7 parts of konjaku glucomannan, babassu
6 parts of wax, 4 parts of sodium citrate, 5 parts of agar, 4 parts of xylitol, 3 parts of polyglyceryl fatty acid ester, 900 parts of water.
The grain size of the nano-calcium carbonate is 40nm.
The preparation method of the degradable high tenacity packaging film, includes the following steps：
(1) wool is cleaned up with cleaning agent, then is sterilized with ultraviolet light；
(2) wool, lignocellulosic, epoxidized soybean oil are added in ultrasonic extraction tank, add the body of 5 times of weight
The dilute hydrochloric acid that the ethyl alcohol of product a concentration of 90% and the volumetric concentration of 0.2 times of weight are 13%, through ultrasonic extraction three times, gained filtrate
Vacuum distillation recycling ethyl alcohol filters out precipitation to get albumen powder and epoxidized soybean oil extracting solution to a concentration of 60% after standing 12h；
(3) starch is added portionwise under stirring in the water measured to 5 times, forms starch slurry after mixing, then divided with quality
Number adjusts pH value to 7 for 4% alkaline solution, then heats to 70 DEG C of stirring 25min and forms uniform gelatinized corn starch solution；
(4) algal polysaccharides and sodium citrate is added under stirring into remaining water, it is molten that gelatinized corn starch fully is added after dissolving completely
Liquid, nano-calcium carbonate, zinc stearate and polyvinyl alcohol, mixture keep the temperature 23min after being warming up to 65 DEG C, add konjak portuguese gansu polyose
Sugar, Brazil wax and sodium bicarbonate, are continuously heating to 95 DEG C, and glycerine, agar, xylitol and polyglycerol fatty acid is then added
Ester reacts 55min, and mixed solution slow cooling cools down after reaction, is cooled to room temperature and albumen powder and epoxidized soybean oil is added
Extracting solution is sufficiently mixed uniformly, finally filters into film liquid；
(5) first will be at film liquid in 3800rpm/min homogenous disperse 13min, then will be coated on base material at film liquid, then exist
Dry 14h, film is taken off after dry at 45 DEG C, is saved it in the closed container that ambient humidity is 58%.
Further, the cleaning agent of the step 1 is prepared from the following raw materials in parts by weight：10 parts of flour, 5 parts of salt, sea
3 parts of mosanom, 0.8 part of pectin, 4 parts of microcrystalline cellulose-glycine.
The specific preparation method of the microcrystalline cellulose-glycine is：It is warming up to after microcrystalline cellulose, glycine are mixed
85 DEG C heat preservation grinding 10min, then be added deionized water until mass water content reach 85%, be sufficiently stirred and utilize at microwave
Device microwave reflow treatment 5min is managed, continues microwave reflow treatment 5min after being spaced 5min, again after the 5min of interval at microwave reflux
5min is managed, is repeated operation, controls total microwave reflow treatment in 30min, after treatment cooled to room temperature, gained is mixed
It closes object to be sent into freeze drier, micro mist is made to get microcrystalline cellulose-glycine through micronizer in dry obtained solid.
The microcrystalline cellulose, glycine mass ratio 3:8.
The performance measurement result of 1 food package film of the present invention of table
| Test event | Embodiment 1 | Embodiment 2 | Embodiment 3 | Ordinary food packaging film |
| Tensile strength (MPa) | 30 | 35 | 32 | 11 |
| Elongation at break (%) | 184 | 198 | 187 | 125 |
| Light transmittance (%) | 91 | 93 | 92 | 89 |
| Rate of perviousness (g/m2·24h) | 7.2 | 7.8 | 7.6 | 16 |
| O2Transmitance (cm3/m2·24h) | 18 | 22 | 20 | 45 |
| CO2Transmitance (cm3/m2·24h) | 12 | 14 | 11 | 26 |
| Nerve | It is excellent | It is excellent | It is excellent | Generally |
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of degradable high tenacity packaging film, is made of the raw material of following mass fraction：60-80 parts of starch, wool 40-50
Part, 15-20 parts of lignocellulosic, 12-18 parts of epoxidized soybean oil, 15-18 parts of nano-calcium carbonate, 12-15 parts of zinc stearate, poly- second
10-12 parts of enol, 8-10 parts of algal polysaccharides, 8-10 parts of glycerine, 6-9 parts of sodium bicarbonate, 5-8 parts of konjaku glucomannan, cohune
5-8 parts of palmitic acid wax, 3-5 parts of sodium citrate, 3-6 parts of agar, 3-5 parts of xylitol, 2-3 parts of polyglyceryl fatty acid ester, water 800-1000
Part.
2. degradable high tenacity packaging film according to claim 1, it is characterised in that：It is preferred that the original of following mass fraction
Material is made：70 parts of starch, 45 parts of wool, 18 parts of lignocellulosic, 15 parts of epoxidized soybean oil, 16 parts of nano-calcium carbonate, stearic acid
13 parts of zinc, 11 parts of polyvinyl alcohol, 9 parts of algal polysaccharides, 9 parts of glycerine, 8 parts of sodium bicarbonate, 7 parts of konjaku glucomannan, babassu
6 parts of wax, 4 parts of sodium citrate, 5 parts of agar, 4 parts of xylitol, 3 parts of polyglyceryl fatty acid ester, 900 parts of water.
3. degradable high tenacity packaging film according to claim 1, it is characterised in that：The grain size of the nano-calcium carbonate
For 30-50nm.
4. degradable high tenacity packaging film according to claim 1, it is characterised in that：Its production method, including it is as follows
Step：
(1) wool is cleaned up with cleaning agent, then is sterilized with ultraviolet light；
(2) wool, lignocellulosic, epoxidized soybean oil are added in ultrasonic extraction tank, the volume for adding 5 times of weight is dense
The dilute hydrochloric acid that the volumetric concentration for the ethyl alcohol and 0.2 times of weight that degree is 85%-95% is 10%-15%, through ultrasonic extraction three times, institute
Filtrate decompression is distilled to recover ethyl alcohol to a concentration of 55%-60%, stand that filter out precipitation after 12h big to get albumen powder and epoxy
Soya-bean oil extracting solution；
(3) starch is added portionwise under stirring in the water measured to 5 times, forms starch slurry after mixing, then be with mass fraction
The alkaline solution of 3-5% adjusts pH value to 6-7, then heats to 60-80 DEG C of stirring 20-30min and forms uniform gelatinized corn starch solution；
(4) algal polysaccharides and sodium citrate is added under stirring into remaining water, gelatinized corn starch solution is fully added after dissolving completely, receives
Rice calcium carbonate, zinc stearate and polyvinyl alcohol, mixture keep the temperature 20-25min after being warming up to 60-70 DEG C, add Amorphophallus rivieri glucomannan
Glycan, Brazil wax and sodium bicarbonate are continuously heating to 90-100 DEG C, and glycerine, agar, xylitol and polyglycereol is then added
Aliphatic ester reacts 45-60min, and mixed solution slow cooling cools down after reaction, is cooled to room temperature and albumen powder and ring is added
Oxygen soybean oil extracting solution is sufficiently mixed uniformly, finally filters into film liquid；
(5) first will be at film liquid in 3500-4000rpm/min homogenous disperse 10-15min, then will be coated on base material at film liquid, so
The dry 12-15h at 40-45 DEG C afterwards, film is taken off after dry, is saved it in the closed container that ambient humidity is 55-60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810191394.1A CN108373552A (en) | 2018-03-08 | 2018-03-08 | A kind of degradable high tenacity packaging film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810191394.1A CN108373552A (en) | 2018-03-08 | 2018-03-08 | A kind of degradable high tenacity packaging film |
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| Publication Number | Publication Date |
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| CN108373552A true CN108373552A (en) | 2018-08-07 |
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|---|---|---|---|
| CN201810191394.1A Withdrawn CN108373552A (en) | 2018-03-08 | 2018-03-08 | A kind of degradable high tenacity packaging film |
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| CN (1) | CN108373552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269331A (en) * | 2020-02-27 | 2020-06-12 | 大连大学 | Modified konjac glucomannan and preparation method thereof |
| CN112520215A (en) * | 2020-12-21 | 2021-03-19 | 青岛正大环保科技有限公司 | Multilayer food packaging bag containing tin foil and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610581A (en) * | 2015-01-15 | 2015-05-13 | 安徽巢湖南方膜业有限责任公司 | Degradable plant starch-sodium caseinate composite packaging film for fruits and vegetables |
-
2018
- 2018-03-08 CN CN201810191394.1A patent/CN108373552A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104610581A (en) * | 2015-01-15 | 2015-05-13 | 安徽巢湖南方膜业有限责任公司 | Degradable plant starch-sodium caseinate composite packaging film for fruits and vegetables |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269331A (en) * | 2020-02-27 | 2020-06-12 | 大连大学 | Modified konjac glucomannan and preparation method thereof |
| CN112520215A (en) * | 2020-12-21 | 2021-03-19 | 青岛正大环保科技有限公司 | Multilayer food packaging bag containing tin foil and preparation method thereof |
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Application publication date: 20180807 |