CN107459754A - Antibacterial food preservative film and preparation method thereof - Google Patents
Antibacterial food preservative film and preparation method thereof Download PDFInfo
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- CN107459754A CN107459754A CN201710722115.5A CN201710722115A CN107459754A CN 107459754 A CN107459754 A CN 107459754A CN 201710722115 A CN201710722115 A CN 201710722115A CN 107459754 A CN107459754 A CN 107459754A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions 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 acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- C08J2331/00—Characterised by the use of copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
- C08J2331/02—Characterised by the use of omopolymers or copolymers of esters of monocarboxylic acids
- C08J2331/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
-
- 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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- 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
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Abstract
The invention discloses it is a kind of first by polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin fiber, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark be KH570 silane coupler mixed, glue refining be made sizing material；Then, the sizing material is added in extruder and carries out extrusion molding, processing with the obtained antibacterial food preservative film；Wherein, the extruder includes feeding section, stage casing and the extruder head being sequentially connected, and the operating temperature of the extruder is：90 110 DEG C of feeding section, 100 120 DEG C of stage casing, 130 170 DEG C of extruder head.The high mechanical strength of the antibacterial food preservative film, and can effectively suppress bacteria breed and then improve the fresh-keeping effect to food.
Description
Technical field
The present invention relates to preservative film field, in particular it relates to a kind of preparation method of antibacterial food preservative film.
Background technology
Preservative film is that a kind of plastic packing product preservative film is a kind of plastic packing product, is generally passed through by masterbatch of ethene
Polymerisation is made, and preservative film can be divided into three major types：The first is polyethylene, abbreviation PE；Second is polyvinyl chloride, referred to as
PVC；The third is polyvinylidene chloride, abbreviation PVDC.
The occasions such as microwave food heating, refrigerator food preserve, fresh and prepared food packaging, family life, supermarket sales field,
Hotel and industrial food packaging applications are all widely used.
Preservative film with its it is convenient, economical, attractive in appearance the advantages of it is extensively popular with consumers.But with the frequency using preservative film
Rate and use range, and higher requirement is proposed to fresh-keeping film strength and antibacterial, fresh keeping property.Especially to summer, disease
Bacterium easily grows, and the storage of many foods is all the intervention for relying on preservative film and refrigerator in family life, but the matter of preservative film
Amount can also directly influence the freshness of food.
The content of the invention
It is an object of the invention to provide a kind of antibacterial food preservative film and preparation method thereof, the machine of the antibacterial food preservative film
Tool intensity is high, and can effectively suppress bacteria breed and then improve the fresh-keeping effect to food.
To achieve these goals, the invention provides a kind of preparation method of antibacterial food preservative film, including following step
Suddenly：
It is first that polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin is fine
Dimension, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are mixed for KH570 silane coupler, glue
Refining is with obtained sizing material；Then, the sizing material is added in extruder and carries out extrusion molding, processing with the obtained antibacterial food
Preservative film；
Wherein, the extruder includes feeding section, stage casing and the extruder head being sequentially connected, and the work of the extruder
Temperature is：90-110 DEG C of feeding section, 100-120 DEG C of stage casing, 130-170 DEG C of extruder head.
Pass through above-mentioned technical proposal, the present invention is by have selected polyvinyl acetate, polyurethane resin is main body resinous wood
Material, additionally by with the addition of in the feed, the component such as calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin fiber exists
Its anti-microbial property is improved while improving fresh-keeping film-strength.In addition, it is by the operating temperature control of extruder in the present invention：Add
Expect 90-110 DEG C of section, 100-120 DEG C of stage casing, 130-170 DEG C of extruder head, further improve obtained fresh-keeping film strength.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
A kind of preparation method of antibacterial food preservative film is provided in the present invention, is comprised the following steps：
It is first that polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin is fine
Dimension, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are mixed for KH570 silane coupler, glue
Refining is with obtained sizing material；Then, the sizing material is added in extruder and carries out extrusion molding, processing with the obtained antibacterial food
Preservative film；
Wherein, the extruder includes feeding section, stage casing and the extruder head being sequentially connected, and the work of the extruder
Temperature is：90-110 DEG C of feeding section, 100-120 DEG C of stage casing, 130-170 DEG C of extruder head.
In above-mentioned technical proposal, the actual conditions of the glue refining can select in wide scope, but in order to improve system
Obtain fresh-keeping film strength, it is preferable that the glue refining at least meets following condition：Temperature is 110-140 DEG C, and/or the time is 3-
4h。
In above-mentioned technical proposal, the condition of the mixing can select in wide scope, such as can directly be stirred
Mixing is mixed, but in order to further improve the synergy between the efficiency of mixing and then raising raw material and then make obtained guarantor
The tension of fresh film is strong, it is preferable that the mixing includes the first mixing and the second mixing；In order to further improve the effect of mixing
Fresh-keeping film strength made from fruit and then notice, it is further preferred that the mode of first mixing is to be stirred at room temperature, and at least
Meet following condition：Rotating speed is 2000-3000rpm, time 1-2h；The mode of second mixing is heating stirring, and extremely
Meet following condition less：Temperature is 90-110 DEG C, rotating speed 2000-3000rpm, time 2-4h.
In above-mentioned technical proposal, the process of the processing can have multiple choices, but in order to improve preparation efficiency, preferably
Ground, the processing include inflation, traction, printing and the winding carried out successively.
Equally, the blow-up ratio and/or draw ratio can select in wide scope, but in order to improve obtained guarantor
Fresh film strength, it is preferable that blow-up ratio is that draw ratio is 6-7 in 3-4, and/or the procedure of processing in the procedure of processing.
In above-mentioned preparation method, the specific dosage of each raw material can select in wide scope, but each in order to improve
The tensile strength of preservative film and anti-microbial property are fresh keeping property made from mutual synergy and then raising between raw material, preferably
Ground, by weight, the polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, first
Shell cellulose fiber, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are the use of KH570 silane coupler
Amount is than being 100：10-15：2-5：5-8：1.5-3.5：3-6：1.1-3.2：5-10：1.1-2.1：0.8-1.6：0.9-1.5.
In above-mentioned preparation method, the species of used chitin can select in wide scope, but in order to improve
The anti-microbial property of obtained preservative film, it is preferable that the chitin fiber is by shrimp, crab, locust, silkworm, julid, centipede and snail body shell
In one or more in extract and obtain.
The molecular weight of resin used in the present invention can select in wide scope, but in order to improve resin and its
Mutual synergy between his raw material, it is preferable that the weight average molecular weight of the polyvinyl acetate is 10,000-2 ten thousand, described poly-
The weight average molecular weight of urethane resin is 30,000-4 ten thousand.
In the present invention, using the particle diameter of hydrotalcite can select in wide scope, but in order to further improve water
Fresh-keeping film strength and fresh keeping property made from mutual synergy and then raising between talcum and other raw materials, it is preferable that
The average grain diameter of the hydrotalcite is 20-30 μm.
Present invention also offers antibacterial food preservative film made from a kind of above-mentioned preparation method.
The present invention will be described in detail by way of examples below.
Embodiment 1
By polyvinyl acetate (weight average molecular weight is 10,000), polyurethane resin (weight average molecular weight is 30,000), calcium stearate,
Chitosan, sodium alginate, hydrotalcite (average grain diameter is 20 μm), chitin fiber in shrimp, crab, locust and snail body shell (by extracting
And obtain), turpentine oil, vinyltrimethoxy silane, silane coupler that tricresyl phosphate and the trade mark are KH570 is first in room temperature
At 25 DEG C, selection of speed 2000rpm stirring 2h；
Then, at 90 DEG C, selection of speed 2000rpm stirrings 4h；Followed by 110 DEG C of glue refining 4h with obtained sizing material；
Finally, the sizing material is added in extruder (90 DEG C of feeding section, 100 DEG C of stage casing, 140 DEG C of extruder head) and carried out
Extrusion molding simultaneously carries out the processing such as inflation (blow-up ratio 3), traction (draw ratio 6), printing and winding and is made described anti-successively
Bacterium food fresh keeping membrane, is denoted as A1；
Wherein, the polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, crust
Cellulose fiber, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are the weight of KH570 silane coupler
Than for 100：10：2：5、1.5：3：1.1：5：1.1：0.8：0.9.
Embodiment 2
By polyvinyl acetate (weight average molecular weight is 1.5 ten thousand), polyurethane resin (weight average molecular weight is 3.5 ten thousand), tristearin
Sour calcium, chitosan, sodium alginate, hydrotalcite (average grain diameter is 25 μm), chitin fiber are (by julid, centipede and snail body shell
Middle extraction and obtain), turpentine oil, vinyltrimethoxy silane, the silane coupler elder generation that tricresyl phosphate and the trade mark are KH570
At 25 DEG C of room temperature, selection of speed 2500rpm stirrings 1.5h；
Then, at 100 DEG C, selection of speed 2500rpm stirrings 3h；Followed by 130 DEG C of glue refining 3.5h with obtained glue
Material；
Finally, the sizing material is added in extruder (100 DEG C of feeding section, 110 DEG C of stage casing, 160 DEG C of extruder head)
Row extrusion molding and successively carry out inflation (blow-up ratio 3.5), traction (draw ratio 6.5), printing and winding etc. processing be made
The antibacterial food preservative film, is denoted as A2；
Wherein, the polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, crust
Cellulose fiber, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are the weight of KH570 silane coupler
Than for 100：12：3：6：2.5：4：2.2：8：1.5：1.2：1.2.
Embodiment 3
By polyvinyl acetate (weight average molecular weight is 20,000), polyurethane resin (weight average molecular weight is 40,000), calcium stearate,
Chitosan, sodium alginate, hydrotalcite (average grain diameter is 30 μm), chitin fiber are (by shrimp, crab, locust, silkworm and snail body shell
Extraction and obtain), turpentine oil, vinyltrimethoxy silane, the silane coupler elder generation that tricresyl phosphate and the trade mark are KH570 exist
At 25 DEG C of room temperature, selection of speed 3000rpm stirring 1h；
Then, at 110 DEG C, selection of speed 3000rpm stirrings 2h；Followed by 140 DEG C of glue refining 3h with obtained sizing material；
Finally, the sizing material is added in extruder (110 DEG C of feeding section, 120 DEG C of stage casing, 170 DEG C of extruder head)
Row extrusion molding simultaneously carries out the processing such as inflation (blow-up ratio 4), traction (draw ratio 7), printing and winding and is made described successively
Antibacterial food preservative film, is denoted as A3；
Wherein, the polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, crust
Cellulose fiber, turpentine oil, vinyltrimethoxy silane, tricresyl phosphate and the trade mark are the weight of KH570 silane coupler
Than for 100：15：5：8：3.5：6：3.2：10：2.1：1.6：1.5.
Embodiment 4
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as A4；The difference is that the temperature of the glue refining is
100℃。
Embodiment 5
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as A5；The difference is that the temperature of the glue refining is
150℃。
Embodiment 6
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as A6；The difference is that the second mixing is not carried out, i.e.,
Only glue refining is directly carried out after 6h is stirred at 25 DEG C of room temperature, under selection of speed 2000rpm.
Embodiment 7
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as A7；The difference is that the first mixing is not carried out, i.e.,
In the only direct glue refining at 90 DEG C, after selection of speed 2000rpm stirrings 6h.
Comparative example 1
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B1；The difference is that the work temperature of the extruder
Spend and be：90 DEG C of feeding section, 90 DEG C of stage casing, 140 DEG C of extruder head.
Comparative example 2
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B2；The difference is that the work temperature of the extruder
Spend and be：100 DEG C of feeding section, 100 DEG C of stage casing, 140 DEG C of extruder head.
Comparative example 3
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B3；The difference is that the work temperature of the extruder
Spend and be：140 DEG C of feeding section, 140 DEG C of stage casing, 140 DEG C of extruder head.
Comparative example 4
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B4；The difference is that polyurethane is not added in raw material
Resin.
Comparative example 5
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B5；Gather the difference is that not adding shell in raw material
Sugar.
Comparative example 6
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B6；The difference is that alginic acid is not added in raw material
Sodium.
Comparative example 7
Antibacterial food preservative film is prepared Following the procedure of Example 1, is denoted as B7；The difference is that chitin is not added in raw material
Fiber.
Detect example 1
According to the worth preservative film A1-A7 of national standard GB/T 1539-2007 regulation measure embodiment and comparative example system with
And B1-B7 colony counts (n/cfug-1)；The rice of same weight is positioned in preservative film A1-A7 and B1-B7 in addition
After 48 hours, whether the rice observed in preservative film has peculiar smell；Concrete outcome is shown in Table 1.
Table 1
| Numbering | Total plate count (n/cfug-1) | Whether peculiar smell is had |
| A1 | 6 | Free from extraneous odour |
| A2 | 6 | Free from extraneous odour |
| A3 | 7 | Free from extraneous odour |
| A4 | 7 | Free from extraneous odour |
| A5 | 8 | Free from extraneous odour |
| A6 | 8 | Free from extraneous odour |
| A7 | 7 | Free from extraneous odour |
| B1 | 10 | Free from extraneous odour |
| B2 | 10 | Free from extraneous odour |
| B2 | 10 | Free from extraneous odour |
| B4 | 9 | Free from extraneous odour |
| B5 | 18 | There is peculiar smell |
| B6 | 19 | There is peculiar smell |
| B7 | 21 | There is peculiar smell |
Detect example 2
According to national standard GB13022-91 testing example and comparative example system worth preservative film A1-A7 and B1-B7 drawing
Stretch intensity (MPa) and elongation at break (%)；Concrete outcome is shown in Table 2.
Table 2
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of preparation method of antibacterial food preservative film, it is characterised in that comprise the following steps：
First by polyvinyl acetate, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin fiber, pine
Fuel-economizing, vinyltrimethoxy silane, tricresyl phosphate and the trade mark be KH570 silane coupler mixed, glue refining with
Sizing material is made；Then, by the sizing material be added in extruder carry out extrusion molding, processing be made the antibacterial food it is fresh-keeping
Film；
Wherein, the extruder includes feeding section, stage casing and the extruder head being sequentially connected, and the operating temperature of the extruder
For：90-110 DEG C of feeding section, 100-120 DEG C of stage casing, 130-170 DEG C of extruder head.
2. preparation method according to claim 1, wherein, the glue refining at least meets following condition：Temperature is 110-140
DEG C, and/or the time is 3-4h.
3. preparation method according to claim 1, wherein, the mixing includes the first mixing and the second mixing；
The mode of first mixing at least meets following condition to be stirred at room temperature：Rotating speed is 2000-3000rpm, and the time is
1-2h；
The mode of second mixing is heating stirring, and at least meets following condition：Temperature is 90-110 DEG C, and rotating speed is
2000-3000rpm, time 2-4h.
4. according to the preparation method described in any one in claim 1-3, wherein, what the processing included carrying out successively blows
Swollen, traction, printing and winding.
5. preparation method according to claim 4, wherein, blow-up ratio is 3-4 in the procedure of processing, and/or it is described plus
Suddenly middle draw ratio is 6-7 to work step.
6. according to the preparation method described in any one in claim 1-3, wherein, by weight, the polyvinyl acetate
Ester, polyurethane resin, calcium stearate, chitosan, sodium alginate, hydrotalcite, chitin fiber, turpentine oil, vinyl trimethoxy
The amount ratio for the silane coupler that base silane, tricresyl phosphate and the trade mark are KH570 is 100：10-15：2-5：5-8：1.5-
3.5：3-6：1.1-3.2：5-10：1.1-2.1：0.8-1.6：0.9-1.5.
7. according to the preparation method described in any one in claim 1-3, wherein, the chitin fiber by shrimp, crab, locust,
Extract and obtain in one or more in silkworm, julid, centipede and snail body shell.
8. according to the preparation method described in any one in claim 1-3, wherein, the Weight-average molecular of the polyvinyl acetate
Measure as 10,000-2 ten thousand, the weight average molecular weight of the polyurethane resin is 30,000-4 ten thousand.
9. according to the preparation method described in any one in claim 1-3, wherein, the average grain diameter of the hydrotalcite is 20-
30μm。
10. antibacterial food preservative film made from the preparation method in a kind of 1-9 as claim described in any one.
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| CN201710722115.5A CN107459754A (en) | 2017-08-22 | 2017-08-22 | Antibacterial food preservative film and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107778741A (en) * | 2017-10-24 | 2018-03-09 | 安徽悦尔伟塑料机械有限公司 | Antibiotic plastic and preparation method thereof |
| CN107793620A (en) * | 2017-11-15 | 2018-03-13 | 安徽悦尔伟塑料机械有限公司 | Paper-plastic stick plastic sheeting and preparation method thereof |
| CN107903552A (en) * | 2017-10-24 | 2018-04-13 | 安徽悦尔伟塑料机械有限公司 | Antibacterial film and preparation method thereof |
| CN107987357A (en) * | 2017-12-15 | 2018-05-04 | 安徽悦尔伟塑料机械有限公司 | Fruit-vegetable plastic wrap and preparation method thereof |
| CN108130803A (en) * | 2017-12-21 | 2018-06-08 | 安徽悦尔伟塑料机械有限公司 | Preserved fruit packaging bag and preparation method thereof |
| CN109825086A (en) * | 2019-01-30 | 2019-05-31 | 普禄达（厦门）电子科技有限公司 | A kind of silica gel push-button and preparation method thereof |
| CN113248827A (en) * | 2021-05-14 | 2021-08-13 | 广州市纳能环保技术开发有限公司 | Sterilizing and fresh-keeping tablet and preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107778741A (en) * | 2017-10-24 | 2018-03-09 | 安徽悦尔伟塑料机械有限公司 | Antibiotic plastic and preparation method thereof |
| CN107903552A (en) * | 2017-10-24 | 2018-04-13 | 安徽悦尔伟塑料机械有限公司 | Antibacterial film and preparation method thereof |
| CN107793620A (en) * | 2017-11-15 | 2018-03-13 | 安徽悦尔伟塑料机械有限公司 | Paper-plastic stick plastic sheeting and preparation method thereof |
| CN107987357A (en) * | 2017-12-15 | 2018-05-04 | 安徽悦尔伟塑料机械有限公司 | Fruit-vegetable plastic wrap and preparation method thereof |
| CN108130803A (en) * | 2017-12-21 | 2018-06-08 | 安徽悦尔伟塑料机械有限公司 | Preserved fruit packaging bag and preparation method thereof |
| CN109825086A (en) * | 2019-01-30 | 2019-05-31 | 普禄达（厦门）电子科技有限公司 | A kind of silica gel push-button and preparation method thereof |
| CN109825086B (en) * | 2019-01-30 | 2022-04-22 | 普禄达（厦门）电子科技有限公司 | Silica gel key and preparation method thereof |
| CN113248827A (en) * | 2021-05-14 | 2021-08-13 | 广州市纳能环保技术开发有限公司 | Sterilizing and fresh-keeping tablet and preparation method and application thereof |
| CN113248827B (en) * | 2021-05-14 | 2023-04-28 | 广州市纳能环保技术开发有限公司 | Sterilizing fresh-keeping tablet and preparation method and application thereof |
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Application publication date: 20171212 |