CN106700979A - High-barrier composite film for food package - Google Patents
High-barrier composite film for food package Download PDFInfo
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- CN106700979A CN106700979A CN201611227097.5A CN201611227097A CN106700979A CN 106700979 A CN106700979 A CN 106700979A CN 201611227097 A CN201611227097 A CN 201611227097A CN 106700979 A CN106700979 A CN 106700979A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/02—Homopolymers or copolymers of unsaturated alcohols
- C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
Abstract
The invention discloses a high-barrier composite film for food package. The high-barrier composite film sequentially comprises a polypropylene film, a waterproof film, a polytetrafluoroethylene film and an organosilicone polyethylene film from a surface layer to an inner layer, wherein an adhesive is coated between the adjacent films; the waterproof film is prepared from a waterproof composition; and the waterproof composition is prepared from the following raw materials in parts by weight: 50-65 parts of polyvinyl alcohol, 0.5-1 part of diethylenetriamine penta(methylene phosphonic acid) heptasaodium, 0.5-1 part of ketobutyric acid sodium salt, 1-2 parts of nanometer-sized neodymium oxide, 0.03-0.05 part of a lignin coupling agent, 5-15 parts of modified konjaku flour, 2-4 parts of furfuryl alcohol, 2-4 parts of iris ensata thumb fiber and 0.5-1 part of calcium hydroxide. The technical problems that the film for food package is relatively poor in oxygen resistance and moisture barrier property, low in mechanical property, relatively poor in boiling resistance and high temperature resistance in the prior art are solved, and the high-barrier composite film is easy to degrade and more environment-friendly.
Description
Technical field
The present invention relates to field of packaging material, and in particular to a kind of food packaging high-barrier composite film.
Background technology
At present, packaging material for food manufacture has started to step into the high-tech industry field of World Focusing.In China, as food
The plastic flexible packaging material and its manufacturing technology of product have also obtained suitable attention and development.
Include following reason from packaging angle analysis food spoilage, the growth of bacterium, breeding, are food apoilages
First main cause, and the presence of oxygen be bacteria live, breeding necessary condition；Sugar, protein in food, oil
The composition oxidation deterioration such as fat, vitamin, is another main cause of spoilage；The genuine volatilization of food loses, outer
Portion's peculiar smell scurries into food the common cause for making product off taste be also food spoilage；It is also the one of food spoilage that water-holding capacity is unstable
Individual main cause, the increase of original moisture or forfeiture can all have a strong impact on the original local flavor of food in food.
But existing food packaging film oxygen resistance and moisture barrier property are poor, mechanical performance is low, water boiling resistance and Nai Gao
Warm nature can be also poor, so as to have a strong impact on the quality of food.And the food packaging film for being used at present is difficult to degrade, to environment
Cause severe contamination.
The content of the invention
It is an object of the invention to provide a kind of food packaging high-barrier composite film, food bag in the prior art is solved
Dress with film oxygen resistance and moisture barrier property it is poor, mechanical performance is low, water boiling resistance and the also poor technical problem of resistance to elevated temperatures, and
Easily degraded, more environmentally-friendly.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：A kind of food packaging high-barrier is answered
Film is closed, includes that polypropylene film, water-fast film, polytetrafluoroethylene film and organosilicon polyethylene are thin successively from top layer to internal layer
Film, scribbles adhesive between adjacent each layer film, the water-fast film is made up of resistance to water composition, and resistance to water composition is according to weight
Amount ratio, by 50-65 parts of polyvinyl alcohol, 0.5-1 parts of sodium of five methene phosphine of diethylenetriamine seven, 0.5-1 parts of butanone acid sodium-salt, 1-2 parts
Nanometer-sized Neodymium Oxide, 0.03-0.05 part of lignin coupling agent, 5-15 parts of modified konjaku powder, 2-4 parts of furfuryl alcohol, 2-4 parts of Chinese small iris fiber and
0.5-1 parts of calcium hydroxide is made；
The preparation method of the modified konjaku powder is konjaku flour to be added into 2-4 times of its weight and concentration is 0.12-0.14g/ml
In the ammonium ceric nitrate aqueous solution, and 2-3h is stirred at a temperature of 30-35 DEG C to be made konjaku slurry, then konjaku slurry is carried out into suction filtration
And wash with water until without ammonium ceric nitrate in water, obtaining modified konjaku powder.
The resistance to water composition also contains 0.1-0.3 parts of y- r-chloropropyl trimethoxyl silane.
The preparation method of the adhesive is, a, according to weight than weighing 50-60 parts of polyvinyl alcohol, 20-30 parts of polyester two
First alcohol, 20-30 part polyacrylate dispersion, 2-4 parts of modified buckwheat, 1-2 parts of potassium hexatitanate, 1-2 parts of hexa-magnesium silicate, 4-5 parts
The sodium of potassium diformate, 0.5-1 part diethylene triamine pentacetic acid (DTPA) five, 1-2 parts of sodium tungstate, 0.3-0.5 parts of isoprene rubber and 0.3-0.5 parts
Butadiene rubber, it is standby as raw material；B, take polyvinyl alcohol, polyester diol, polyacrylate dispersion, modified buckwheat, different
Penta rubber and butadiene rubber are heated to 70-75 DEG C in being put into reactor, then add potassium hexatitanate, hexa-magnesium silicate, potassium diformate
It is stirred with sodium tungstate, mixing speed is 500-510r/min, treats that temperature rises to 85-90 DEG C and makes the second of addition diethylenetriamine five
Sour five sodium, 20-30min is stirred with 600-610r/min speed, and it is to obtain adhesive to be then incubated 2-3h.
In the preparation process of the adhesive, its raw material also contains 0.1-0.2 parts of borax and 0.5-1 parts of diatomite.
The preparation method of the modified buckwheat be take buckwheat and add it to as 3-5 times of its weight water in mix
Close uniform, it is the tin coupling agent of buckwheat weight 8%-10% to add, and is 5-6 with sulphur acid for adjusting pH, and it is diatom to be subsequently adding
The aucubin of native weight 1%-3%, is well mixed, and adjusts the temperature to 60-65 DEG C and is incubated 2-3h, and it is diatomite to add
The stearic acid of weight 4%-6% stirs, and is then dried under the conditions of 105-110 DEG C to constant weight, obtains modified buckwheat.
The invention has the advantages that：
First, high-barrier composite film of the present invention has oxygen resistance high, and oxygen permeating amount is reduced to greatest extent, suppresses bacterium numerous
Grow, prevent sugar, protein and grease etc. to be oxidized and utilized by bacterium, so as to ensure the quality of food, prevent the original of food
The volatilization of juice original flavor is lost and outside peculiar smell is scurried into food；
2nd, high-barrier composite film of the present invention has moisture barrier property high, food water-holding capacity is more stablized, and prevents because of food
Product contain moisture increases or loses influence food original local flavor；
3rd, the modified konjaku powder used in the present invention is obtained through ammonium ceric nitrate is modified by konjaku flour, modified konjaku flour, aldehyde
Base unit weight increases, but still retains primary alconol, hydrogen bond can be formed and between polyvinyl alcohol molecule, and with the addition of diethylenetriamine wherein
The sodium of five methene phosphine seven and butanone acid sodium-salt, improve the mechanical performance of laminated film, contain in laminated film of the present invention
Chinese small iris fiber and Nanometer-sized Neodymium Oxide, and lignin coupling agent is added in the preparation, so that water boiling resistance of the invention and high temperature resistant
Performance is significantly improved, and laminated film of the present invention is boiled or the release without small-molecule substance and monomer at high temperature through water,
Safety non-toxic；
4th, laminated film of the present invention is easily degraded, environmental protection；
5th, the adhesive for using in the prior art is usually adhesive made of synthetic resin, and easy release formaldehyde, poisonous during use
And pollute environment, and the adhesive safety non-toxic that the present invention is used, by modified buckwheat and polyvinyl alcohol, polyester diol, poly-
The adhesive that acrylic acid ester emulsion isoprene rubber and butadiene rubber are mixed with, can greatly improve the property of mixing material
Can, make its water resistance and resistance to elevated temperatures splendid, and be added to plus potassium hexatitanate, hexa-magnesium silicate, potassium diformate and tungsten
Sour sodium, stabilizing it property is high, and the retention time is long, and caking property is stronger, of the invention compared to common natural polymerization species adhesive
Adhesive heat resisting temperature improves 23 DEG C, and impact strength improves 55.2%, and toughness improves 23.1%, and bonding strength is improved
45%；
6th, the modified buckwheat used in the present invention, its preparation method is simple, and biodegradable properties are good, and compatibility is good, soft
Toughness is high, and tensile resistance is good, when being modified to buckwheat, contains to aucubin, aucubin is added in buckwheat
There are multiple polar functional groups, property is active, and the dialdehyde similar to glutaraldehyde is generated in the presence of tin coupling agent and buckwheat
Structure, so that the modified buckwheat of generation is more uniform.
Specific embodiment
With reference to specific examples below, the present invention is described in further detail, and protection scope of the present invention is not limited to
In following examples.Implement process of the invention, condition, reagent, experimental technique etc., in addition to the following special content for referring to,
The universal knowledege and common knowledge of this area are, the present invention is not particularly limited content.
Embodiment 1
A kind of food packaging high-barrier composite film, polypropylene film, water-fast film, poly- four are included from top layer successively to internal layer
Fluoroethylene film and organosilicon polyethylene film, scribble adhesive between adjacent each layer film, the water-fast film is by water-fast
Composition is made, resistance to water composition according to weight ratio, by 50 parts of polyvinyl alcohol, 0.5 part of sodium of five methene phosphine of diethylenetriamine seven,
0.5 portion of butanone acid sodium-salt, 1 portion of Nanometer-sized Neodymium Oxide, 0.03 portion of lignin coupling agent, 5 portions of modified konjaku powder, 2 portions of furfuryl alcohols, 2 portions of horses
Lin's fiber and 0.5 part of calcium hydroxide are made；
The preparation method of the modified konjaku powder is konjaku flour to be added into 2 times of its weight and concentration is 0.12g/ml cerous nitrates
In aqueous ammonium, and 2h is stirred at a temperature of 30 DEG C to be made konjaku slurry, then konjaku slurry is carried out into suction filtration and is washed with water
Until being free of ammonium ceric nitrate in water, modified konjaku powder is obtained.
The preparation method of the adhesive is, a, according to weight than weighing 50 parts of polyvinyl alcohol, 20 parts of polyester diols, 20
Part polyacrylate dispersion, 2 parts of modified buckwheats, 1 part of potassium hexatitanate, 1 part of hexa-magnesium silicate, 4 parts of potassium diformates, 0.5 part of diethyl
Alkene Pentetate Pentasodium, 1 part of sodium tungstate, 0.3 part of isoprene rubber and 0.3 part of butadiene rubber, it is standby as raw material；B, take it is poly-
Vinyl alcohol, polyester diol, polyacrylate dispersion, modified buckwheat, isoprene rubber and butadiene rubber add in being put into reactor
Heat is added potassium hexatitanate, hexa-magnesium silicate, potassium diformate and sodium tungstate and is stirred to 70 DEG C, then, and mixing speed is 500r/
Min, treats that temperature rises to 85 DEG C and makes the sodium of addition diethylene triamine pentacetic acid (DTPA) five, and 20min is stirred with 600r/min speed, is then incubated
2h is to obtain adhesive.
The preparation method of the modified buckwheat be take buckwheat and add it to as 3-5 times of its weight water in mix
Close uniform, add the tin coupling agent for buckwheat weight 8%, be 5 with sulphur acid for adjusting pH, it is diatomite weight to be subsequently adding
1% aucubin, is well mixed, and adjusts the temperature to 60 DEG C and is incubated 2h, and it is the stearic acid of diatomite weight 4% to add
Stir, then dried to constant weight under the conditions of 105 DEG C, obtain modified buckwheat.
More than based on technical scheme, can more than on the basis of further improved：
Such as, the resistance to water composition also contains 0.1 part of y- r-chloropropyl trimethoxyl silane.
And for example, in the preparation process of the adhesive, its raw material also contains 0.1 part of borax and 0.5 part of diatomite.
Embodiment 2
A kind of food packaging high-barrier composite film, polypropylene film, water-fast film, poly- four are included from top layer successively to internal layer
Fluoroethylene film and organosilicon polyethylene film, scribble adhesive between adjacent each layer film, the water-fast film is by water-fast
Composition is made, resistance to water composition according to weight ratio, by 50-65 parts of polyvinyl alcohol, 0.8 part of methene phosphine seven of diethylenetriamine five
Sodium, 0.7 part of butanone acid sodium-salt, 1.5 parts of Nanometer-sized Neodymium Oxides, 0.04 part of lignin coupling agent, 10 parts of modified konjaku powder, 3 parts of furfuryl alcohols,
3 parts of Chinese small iris fibers and 0.7 part of calcium hydroxide are made；
The preparation method of the modified konjaku powder is konjaku flour to be added into 3 times of its weight and concentration is 0.13g/ml cerous nitrates
In aqueous ammonium, and 2.5h is stirred at a temperature of 33 DEG C to be made konjaku slurry, then konjaku slurry is carried out into suction filtration and is washed with water
Wash until without ammonium ceric nitrate in water, obtaining modified konjaku powder.
The preparation method of the adhesive is, a, according to weight than weighing 55 parts of polyvinyl alcohol, 25 parts of polyester diols, 25
Part polyacrylate dispersion, 3 parts of modified buckwheats, 1.5 parts of potassium hexatitanates, 1.5 parts of hexa-magnesium silicates, 4.5 parts of potassium diformates, 0.8
Part diethylene triamine pentacetic acid (DTPA) five sodium, 1.5 parts of sodium tungstates, 0.4 part of isoprene rubber and 0.4 part of butadiene rubber, it is standby as raw material
With；B, take polyvinyl alcohol, polyester diol, polyacrylate dispersion, modified buckwheat, isoprene rubber and butadiene rubber and be put into instead
Answer and be heated to 72 DEG C in kettle, then add potassium hexatitanate, hexa-magnesium silicate, potassium diformate and sodium tungstate and be stirred, mixing speed
It is 505r/min, treats that temperature rises to 87 DEG C and makes the sodium of addition diethylene triamine pentacetic acid (DTPA) five, 25min is stirred with 605r/min speed,
Then insulation 2.5h is to obtain adhesive.
The preparation method of the modified buckwheat be take buckwheat and add it to as 3-5 times of its weight water in mix
Close uniform, add the tin coupling agent for buckwheat weight 9%, be 5.5 with sulphur acid for adjusting pH, it is diatomite weight to be subsequently adding
2% aucubin, is well mixed, and adjusts the temperature to 63 DEG C and is incubated 2h, and it is the stearic acid of diatomite weight 5% to add
Stir, then dried to constant weight under the conditions of 108 DEG C, obtain modified buckwheat.
More than based on technical scheme, can more than on the basis of further improved：
Such as, the resistance to water composition also contains 0.2 part of y- r-chloropropyl trimethoxyl silane.
And for example, in the preparation process of the adhesive, its raw material also contains 0.15 part of borax and 0.7 part of diatomite.
Embodiment 3
A kind of food packaging high-barrier composite film, polypropylene film, water-fast film, poly- four are included from top layer successively to internal layer
Fluoroethylene film and organosilicon polyethylene film, scribble adhesive between adjacent each layer film, the water-fast film is by water-fast
Composition is made, resistance to water composition according to weight ratio, by 65 parts of polyvinyl alcohol, 1 part of sodium of five methene phosphine of diethylenetriamine seven, 1 part
Butanone acid sodium-salt, 2 parts of Nanometer-sized Neodymium Oxides, 0.05 part of lignin coupling agent, 15 parts of modified konjaku powder, 4 parts of furfuryl alcohols, 4 parts of Chinese small iris fibres
1 part of calcium hydroxide of peacekeeping is made；
The preparation method of the modified konjaku powder is konjaku flour to be added into 4 times of its weight and concentration is 0.14g/ml cerous nitrates
In aqueous ammonium, and 3h is stirred at a temperature of 35 DEG C to be made konjaku slurry, then konjaku slurry is carried out into suction filtration and is washed with water
Until being free of ammonium ceric nitrate in water, modified konjaku powder is obtained.
The preparation method of the adhesive is, a, according to weight than weighing 60 parts of polyvinyl alcohol, 30 parts of polyester diols, 30
Part polyacrylate dispersion, 4 parts of modified buckwheats, 2 parts of potassium hexatitanates, 2 parts of hexa-magnesium silicates, 5 parts of potassium diformates, 1 part of divinyl
Pentetate Pentasodium, 2 parts of sodium tungstates, 0.5 part of isoprene rubber and 0.5 part of butadiene rubber, it is standby as raw material；B, take poly- second
Enol, polyester diol, polyacrylate dispersion, modified buckwheat, isoprene rubber and butadiene rubber are heated in being put into reactor
To 75 DEG C, then add potassium hexatitanate, hexa-magnesium silicate, potassium diformate and sodium tungstate and be stirred, mixing speed is 510r/min,
Treat that temperature rises to 90 DEG C and makes the sodium of addition diethylene triamine pentacetic acid (DTPA) five, 30min is stirred with 610r/min speed, being then incubated 3h is
Obtain adhesive.
The preparation method of the modified buckwheat be take buckwheat and add it to as 3-5 times of its weight water in mix
Close uniform, add the tin coupling agent for buckwheat weight 10%, be 6 with sulphur acid for adjusting pH, it is diatomite weight to be subsequently adding
3% aucubin, is well mixed, and adjusts the temperature to 65 DEG C and is incubated 3h, and it is the stearic acid of diatomite weight 6% to add
Stir, then dried to constant weight under the conditions of 110 DEG C, obtain modified buckwheat.
More than based on technical scheme, can more than on the basis of further improved：
Such as, the resistance to water composition also contains 0.3 part of y- r-chloropropyl trimethoxyl silane.
And for example, in the preparation process of the adhesive, its raw material also contains 0.2 part of borax and 1 part of diatomite.
Claims (5)
1. a kind of food packaging high-barrier composite film, it is characterised in that：From top layer to internal layer successively include polypropylene film,
Water-fast film, polytetrafluoroethylene film and organosilicon polyethylene film, scribble adhesive between adjacent each layer film, described resistance to
Water film is made up of resistance to water composition, resistance to water composition according to weight ratio, by 50-65 parts of polyvinyl alcohol, 0.5-1 parts of divinyl three
The sodium of five methene phosphine of amine seven, 0.5-1 parts of butanone acid sodium-salt, 1-2 parts of Nanometer-sized Neodymium Oxide, 0.03-0.05 parts of lignin coupling agent, 5-15
Part modified konjaku powder, 2-4 parts of furfuryl alcohol, 2-4 parts of Chinese small iris fiber and 0.5-1 parts of calcium hydroxide are made；
The preparation method of the modified konjaku powder is konjaku flour to be added into 2-4 times of its weight and concentration is 0.12-0.14g/ml
In the ammonium ceric nitrate aqueous solution, and 2-3h is stirred at a temperature of 30-35 DEG C to be made konjaku slurry, then konjaku slurry is carried out into suction filtration
And wash with water until without ammonium ceric nitrate in water, obtaining modified konjaku powder.
2. a kind of food packaging high-barrier composite film as claimed in claim 1, it is characterised in that：The resistance to water composition
Also contain 0.1-0.3 parts of y- r-chloropropyl trimethoxyl silane.
3. a kind of food packaging high-barrier composite film as claimed in claim 1, it is characterised in that：The system of the adhesive
Preparation Method is, a, according to weight than weighing 50-60 parts of polyvinyl alcohol, 20-30 parts of polyester diol, 20-30 parts of polyacrylate
Emulsion, 2-4 part of modified buckwheat, 1-2 parts of potassium hexatitanate, 1-2 parts of hexa-magnesium silicate, 4-5 parts of potassium diformate, 0.5-1 parts of divinyl
Pentetate Pentasodium, 1-2 part sodium tungstate, 0.3-0.5 parts of isoprene rubber and 0.3-0.5 parts of butadiene rubber, it is standby as raw material
With；B, take polyvinyl alcohol, polyester diol, polyacrylate dispersion, modified buckwheat, isoprene rubber and butadiene rubber and be put into instead
Answer and be heated to 70-75 DEG C in kettle, then add potassium hexatitanate, hexa-magnesium silicate, potassium diformate and sodium tungstate and be stirred, stirring speed
It is 500-510r/min to spend, and treats that temperature rises to 85-90 DEG C and makes the sodium of addition diethylene triamine pentacetic acid (DTPA) five, with 600-610r/min speed
Degree stirring 20-30min, it is to obtain adhesive to be then incubated 2-3h.
4. a kind of food packaging high-barrier composite film as claimed in claim 3, it is characterised in that：The system of the adhesive
During standby, its raw material also contains 0.1-0.2 parts of borax and 0.5-1 parts of diatomite.
5. a kind of food packaging high-barrier composite film as claimed in claim 3, it is characterised in that：The modified buckwheat
Preparation method be take buckwheat and add it to as 3-5 times of its weight water in be well mixed, it is buckwheat weight to add
The tin coupling agent of 8%-10% is measured, is 5-6 with sulphur acid for adjusting pH, it is the peach jaurel of diatomite weight 1%-3% to be subsequently adding
Glycosides, is well mixed, and adjusts the temperature to 60-65 DEG C and is incubated 2-3h, adds as the stearic acid of diatomite weight 4%-6% is stirred
Uniformly, then dried to constant weight under the conditions of 110-105 DEG C, obtain modified buckwheat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611227097.5A CN106700979A (en) | 2016-12-27 | 2016-12-27 | High-barrier composite film for food package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227097.5A CN106700979A (en) | 2016-12-27 | 2016-12-27 | High-barrier composite film for food package |
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| CN106700979A true CN106700979A (en) | 2017-05-24 |
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Family Applications (1)
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| CN201611227097.5A Pending CN106700979A (en) | 2016-12-27 | 2016-12-27 | High-barrier composite film for food package |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108148230A (en) * | 2017-12-13 | 2018-06-12 | 北京中选耐磨设备有限公司平顶山分公司 | A kind of cyclone resistance to erosion rubber liner and preparation method thereof |
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| WO1998031731A1 (en) * | 1997-01-21 | 1998-07-23 | Cryovac, Inc. | Additive transfer film suitable for cook-in end use |
| CN103600544A (en) * | 2013-10-29 | 2014-02-26 | 昆山好利达包装有限公司 | Boiling resistant food packaging material |
| CN105542365A (en) * | 2016-01-20 | 2016-05-04 | 中山北化高分子材料有限公司 | Modified PVA composite packaging film and preparation method thereof |
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| CN108148230A (en) * | 2017-12-13 | 2018-06-12 | 北京中选耐磨设备有限公司平顶山分公司 | A kind of cyclone resistance to erosion rubber liner and preparation method thereof |
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Application publication date: 20170524 |