CN105802165A - Antibacterial food packaging material and preparation method thereof - Google Patents

Antibacterial food packaging material and preparation method thereof Download PDF

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Publication number
CN105802165A
CN105802165A CN201610295260.5A CN201610295260A CN105802165A CN 105802165 A CN105802165 A CN 105802165A CN 201610295260 A CN201610295260 A CN 201610295260A CN 105802165 A CN105802165 A CN 105802165A
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packaging material
food packaging
antibacterial food
preparation
speed
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陈昌
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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
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • 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
    • B29C2948/9258—Velocity
    • 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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • 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
    • 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
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/06—Properties of polyethylene
    • C08L2207/066—LDPE (radical process)

Abstract

The invention provides an antibacterial food packaging material and a preparation method thereof. The antibacterial food packaging material is prepared from the following steps of: (1) mixing corn starch, corn protein powder, glycerin, cassia oil and water and stirring the mixture with a high-speed mixer; (2) putting the mixture into a seal bag for standing; (3) adding the product in a twin-screw extruder for extruding and pelletizing; (4) mixing particles with polylactic acid and low-density polyethylene, and dispersing the mixture with a highs-peed disperser; (5) adding the product to the twin-screw extruder for extruding and pelletizing; (6) mixing the particles with tert-Butylhydroquinone, potassium sorbate, glucan, chitosan, nano-silver, geraniol, cinnamic acid and citric acid and dispersing the mixture in the high-speed disperser; and (7) adding the product to the twin-screw extruder for extruding and pelletizing. The antibacterial food packaging material has good mechanical property, elasticity and tenacity, and has good inhibition property on escherichia coli, staphylococcus aureus and bacillus subtilis.

Description

A kind of antibacterial food packaging material and preparation method thereof
Technical field
The present invention relates to packaging material field, be specifically related to a kind of antibacterial food packaging material and preparation method thereof.
Background technology
Clothing, food, lodging and transportion--basic necessities of life, human lives's is required, and along with socioeconomic development, what people pursued no longer simply has enough, but to eat, and meanwhile, also due to the high speed development of communications, the development of food service industry is also got up rapidly, and circulation and scale become more and more wide.In the circulation transportation of food, the quality how keeping food is a key, and especially food problems takes place frequently in recent years, and the health safety issues of food is also increasingly paid close attention to by people.At present, being typically all the shelf-life extending food by adding preservative etc., people are not necessarily belonging to health by preservative.Therefore, the current solution that how to extend the shelf life when the chemical addition agent in reducing food is few, and using antimicrobial packaging is one of them.Antibiotic packaging material suppresses microbial growth in storage by antibiotic substance, thus extending the shelf-life of food, in minimizing food, the addition of preservative etc., adds the safety of food.At present, it has become the focus that food packaging industry is paid close attention to and studied, has wide market prospect.
Summary of the invention
Solve the technical problem that:It is an object of the invention to provide a kind of antibacterial food packaging material, have good mechanical property, elasticity and toughness are good；Escherichia coli, staphylococcus aureus and bacillus subtilis are respectively provided with good inhibition.
Technical scheme:A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 50-70 part, Low Density Polyethylene 5-10 part, tert-butyl hydroquinone 0.5-1 part, corn starch 5-10 part, Zein powder 0.5-1 part, potassium sorbate 0.1-0.2 part, glycerol 2-4 part, glucosan 0.5-1 part, chitosan 1-2 part, nanometer silver 0.2-0.5 part, geraniol 0.1-0.3 part, cinnamic acid 0.1-0.3 part, citric acid 0.1-0.2 part, cassia oil 0.3-0.8 part, water 0.5-1 part.
It is preferred that, described a kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 55-65 part, Low Density Polyethylene 6-9 part, tert-butyl hydroquinone 0.6-0.9 part, corn starch 6-9 part, Zein powder 0.7-0.9 part, potassium sorbate 0.11-0.17 part, glycerol 2.5-3.5 part, glucosan 0.6-0.9 part, chitosan 1.2-1.8 part, nanometer silver 0.3-0.4 part, geraniol 0.15-0.25 part, cinnamic acid 0.15-0.25 part, citric acid 0.12-0.17 part, cassia oil 0.4-0.6 part, water 0.6-0.9 part.
The preparation method of above-mentioned antibacterial food packaging material comprises the following steps:
(1) corn starch, Zein powder, glycerol, cassia oil and water are mixed, stir 5-10 minute under rotating speed 800-1000r/min with homogenizer；
(2) put in sealing bag, stand 23-25 hour；
(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 135-145 DEG C, 150-160 DEG C, 165-175 DEG C, 165-175 DEG C, 145-155 DEG C, and screw speed is 110-130r/min；
(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1-3 minute under rotating speed 6000-8000rpm with high speed dispersor；
(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 130-140 DEG C, 145-155 DEG C, 155-165 DEG C, 155-165 DEG C, 145-155 DEG C, and screw speed is 110-130r/min；
(6) above-mentioned pellet is mixed with remaining ingredient, disperse 1-3 minute with rotating speed 7000-9000rpm in high speed dispersor；
(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 135-145 DEG C, 145-155 DEG C, 155-165 DEG C, 155-165 DEG C, 145-155 DEG C, and screw speed is 110-130r/min.
It is further preferred that step (1) medium speed is 850-950r/min, mixing time is 6-9 minute.
It is further preferred that time of repose is 23.5-24.5 hour in step (2).
It is further preferred that step (3) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 150 DEG C, screw speed is 115-125r/min.
It is further preferred that step (4) medium speed is 6500-7500rpm, the time is 2 minutes.
It is further preferred that step (5) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 135 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, screw speed is 120r/min.
It is further preferred that step (6) medium speed is 7500-8500rpm, jitter time is 2 minutes.
It is further preferred that step (7) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, screw speed is 120r/min.
Beneficial effect:The antibacterial food packaging material of the present invention have good mechanical property, and its elongation at break is 10.4%, and stretch modulus is 4.0GPa, and hot strength is maximum also up to 36MPa, and elasticity and toughness are good；Escherichia coli, staphylococcus aureus and bacillus subtilis are respectively provided with good inhibition, and when the consumption of the present invention is 5%, its bacteriostasis rate has all reached 100%.
Detailed description of the invention
Embodiment 1
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 50 parts, Low Density Polyethylene 5 parts, tert-butyl hydroquinone 0.5 part, corn starch 5 parts, Zein powder 0.5 part, potassium sorbate 0.1 part, glycerol 2 parts, glucosan 0.5 part, chitosan 1 part, nanometer silver 0.2 part, geraniol 0.1 part, cinnamic acid 0.1 part, citric acid 0.1 part, cassia oil 0.3 part, 0.5 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 5 minutes under rotating speed 800r/min with homogenizer；(2) put in sealing bag, stand 23 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85 DEG C, 115 DEG C, 135 DEG C, 150 DEG C, 165 DEG C, 165 DEG C, 145 DEG C, and screw speed is 110r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1 minute under rotating speed 6000rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85 DEG C, 115 DEG C, 130 DEG C, 145 DEG C, 155 DEG C, 155 DEG C, 145 DEG C, and screw speed is 110r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 1 minute with rotating speed 7000rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 85 DEG C, 115 DEG C, 135 DEG C, 145 DEG C, 155 DEG C, 155 DEG C, 145 DEG C, and screw speed is 110r/min.
Embodiment 2
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 55 parts, Low Density Polyethylene 6 parts, tert-butyl hydroquinone 0.6 part, corn starch 6 parts, Zein powder 0.7 part, potassium sorbate 0.11 part, glycerol 2.5 parts, glucosan 0.6 part, chitosan 1.2 parts, nanometer silver 0.3 part, geraniol 0.15 part, cinnamic acid 0.15 part, citric acid 0.12 part, cassia oil 0.4 part, 0.6 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 6 minutes under rotating speed 850r/min with homogenizer；(2) put in sealing bag, stand 23.5 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 150 DEG C, and screw speed is 115r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 2 minutes under rotating speed 6500rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 135 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 2 minutes with rotating speed 7500rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min.
Embodiment 3
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 60 parts, Low Density Polyethylene 7 parts, tert-butyl hydroquinone 0.7 part, corn starch 8 parts, Zein powder 0.7 part, potassium sorbate 0.15 part, glycerol 3 parts, glucosan 0.8 part, chitosan 1.5 parts, nanometer silver 0.3 part, geraniol 0.2 part, cinnamic acid 0.2 part, citric acid 0.15 part, cassia oil 0.5 part, 0.8 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 7 minutes under rotating speed 900r/min with homogenizer；(2) put in sealing bag, stand 24 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 150 DEG C, and screw speed is 120r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 2 minutes under rotating speed 7000rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 135 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 2 minutes with rotating speed 8000rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min.
Embodiment 4
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 65 parts, Low Density Polyethylene 9 parts, tert-butyl hydroquinone 0.9 part, corn starch 9 parts, Zein powder 0.9 part, potassium sorbate 0.17 part, glycerol 3.5 parts, glucosan 0.9 part, chitosan 1.8 parts, nanometer silver 0.4 part, geraniol 0.25 part, cinnamic acid 0.25 part, citric acid 0.17 part, cassia oil 0.6 part, 0.9 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 9 minutes under rotating speed 950r/min with homogenizer；(2) put in sealing bag, stand 24.5 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 150 DEG C, and screw speed is 125r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 2 minutes under rotating speed 7500rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 135 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 2 minutes with rotating speed 8500rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min.
Embodiment 5
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 70 parts, Low Density Polyethylene 10 parts, tert-butyl hydroquinone 1 part, corn starch 10 parts, Zein powder 1 part, potassium sorbate 0.2 part, glycerol 4 parts, glucosan 1 part, chitosan 2 parts, nanometer silver 0.5 part, geraniol 0.3 part, cinnamic acid 0.3 part, citric acid 0.2 part, cassia oil 0.8 part, 1 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 10 minutes under rotating speed 1000r/min with homogenizer；(2) put in sealing bag, stand 25 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 160 DEG C, 175 DEG C, 175 DEG C, 155 DEG C, and screw speed is 130r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1-3 minute under rotating speed 8000rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 140 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 3 minutes with rotating speed 9000rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min.
Comparative example 1
The present embodiment and embodiment 5 are distinctive in that and do not contain Zein powder and cassia oil.Specifically:
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 70 parts, Low Density Polyethylene 10 parts, tert-butyl hydroquinone 1 part, corn starch 10 parts, potassium sorbate 0.2 part, glycerol 4 parts, glucosan 1 part, chitosan 2 parts, nanometer silver 0.5 part, geraniol 0.3 part, cinnamic acid 0.3 part, citric acid 0.2 part, 1 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, glycerol and water are mixed by (1), stir 10 minutes under rotating speed 1000r/min with homogenizer；(2) put in sealing bag, stand 25 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 160 DEG C, 175 DEG C, 175 DEG C, 155 DEG C, and screw speed is 130r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1-3 minute under rotating speed 8000rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 140 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 3 minutes with rotating speed 9000rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min.
Comparative example 2
The present embodiment and embodiment 5 are distinctive in that and do not contain nanometer silver and cinnamic acid.Specifically:
A kind of antibacterial food packaging material, are prepared from weight portion by following component: polylactic acid 70 parts, Low Density Polyethylene 10 parts, tert-butyl hydroquinone 1 part, corn starch 10 parts, Zein powder 1 part, potassium sorbate 0.2 part, glycerol 4 parts, glucosan 1 part, chitosan 2 parts, geraniol 0.3 part, citric acid 0.2 part, cassia oil 0.8 part, 1 part of water.
The preparation method of above-mentioned antibacterial food packaging material is: corn starch, Zein powder, glycerol, cassia oil and water are mixed by (1), stir 10 minutes under rotating speed 1000r/min with homogenizer；(2) put in sealing bag, stand 25 hours；(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 160 DEG C, 175 DEG C, 175 DEG C, 155 DEG C, and screw speed is 130r/min；(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1-3 minute under rotating speed 8000rpm with high speed dispersor；(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 140 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min；(6) above-mentioned pellet is mixed with remaining ingredient, disperse 3 minutes with rotating speed 9000rpm in high speed dispersor；(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 95 DEG C, 125 DEG C, 145 DEG C, 155 DEG C, 165 DEG C, 165 DEG C, 155 DEG C, and screw speed is 130r/min.
The performance indications of material of the present invention are as follows, it may be seen that the present invention has good mechanical property, from most preferred embodiment 4 it will be seen that its elongation at break is 10.4%, stretch modulus is 4.0GPa, and hot strength is maximum up to 36MPa, and elasticity and toughness are good；Escherichia coli, staphylococcus aureus and bacillus subtilis are respectively provided with good inhibition, and when the consumption of the present invention is 5%, its bacteriostasis rate has all reached 100%.
The performance indications of table 1 antibacterial food packaging material
Note: being determined as of bacteriostasis rate uses mass fraction 5% present invention.

Claims (10)

1. antibacterial food packaging material, it is characterised in that: it is prepared from weight portion by following component: polylactic acid 50-70 part, Low Density Polyethylene 5-10 part, tert-butyl hydroquinone 0.5-1 part, corn starch 5-10 part, Zein powder 0.5-1 part, potassium sorbate 0.1-0.2 part, glycerol 2-4 part, glucosan 0.5-1 part, chitosan 1-2 part, nanometer silver 0.2-0.5 part, geraniol 0.1-0.3 part, cinnamic acid 0.1-0.3 part, citric acid 0.1-0.2 part, cassia oil 0.3-0.8 part, water 0.5-1 part.
2. a kind of antibacterial food packaging material according to claim 1, it is characterized in that: be prepared from weight portion by following component: polylactic acid 55-65 part, Low Density Polyethylene 6-9 part, tert-butyl hydroquinone 0.6-0.9 part, corn starch 6-9 part, Zein powder 0.7-0.9 part, potassium sorbate 0.11-0.17 part, glycerol 2.5-3.5 part, glucosan 0.6-0.9 part, chitosan 1.2-1.8 part, nanometer silver 0.3-0.4 part, geraniol 0.15-0.25 part, cinnamic acid 0.15-0.25 part, citric acid 0.12-0.17 part, cassia oil 0.4-0.6 part, water 0.6-0.9 part.
3. the preparation method of a kind of antibacterial food packaging material described in any one of claim 1 to 2, it is characterised in that: comprise the following steps:
(1) corn starch, Zein powder, glycerol, cassia oil and water are mixed, stir 5-10 minute under rotating speed 800-1000r/min with homogenizer；
(2) put in sealing bag, stand 23-25 hour；
(3) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 135-145 DEG C, 150-160 DEG C, 165-175 DEG C, 165-175 DEG C, 145-155 DEG C, and screw speed is 110-130r/min；
(4) above-mentioned pellet is mixed with polylactic acid, Low Density Polyethylene, disperse 1-3 minute under rotating speed 6000-8000rpm with high speed dispersor；
(5) carrying out extruding pelletization in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 130-140 DEG C, 145-155 DEG C, 155-165 DEG C, 155-165 DEG C, 145-155 DEG C, and screw speed is 110-130r/min；
(6) above-mentioned pellet is mixed with remaining ingredient, disperse 1-3 minute with rotating speed 7000-9000rpm in high speed dispersor；
(7) carrying out extrusion molding in addition double screw extruder, each district temperature is followed successively by 85-95 DEG C, 115-125 DEG C, 135-145 DEG C, 145-155 DEG C, 155-165 DEG C, 155-165 DEG C, 145-155 DEG C, and screw speed is 110-130r/min.
4. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: described step (1) medium speed is 850-950r/min, and mixing time is 6-9 minute.
5. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: in described step (2), time of repose is 23.5-24.5 hour.
6. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterized in that: described step (3) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 155 DEG C, 170 DEG C, 170 DEG C, 150 DEG C, and screw speed is 115-125r/min.
7. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: described step (4) medium speed is 6500-7500rpm, and the time is 2 minutes.
8. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: described step (5) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 135 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min.
9. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: described step (6) medium speed is 7500-8500rpm, and jitter time is 2 minutes.
10. the preparation method of a kind of antibacterial food packaging material according to claim 3, it is characterised in that: described step (7) Zhong Ge district temperature is followed successively by 90 DEG C, 120 DEG C, 140 DEG C, 150 DEG C, 160 DEG C, 160 DEG C, 150 DEG C, and screw speed is 120r/min.
CN201610295260.5A 2016-05-06 2016-05-06 Antibacterial food packaging material and preparation method thereof Pending CN105802165A (en)

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CN106189140A (en) * 2016-07-29 2016-12-07 无锡龙盈环保科技有限公司 A kind of degradable food fresh keeping membrane and preparation method thereof
CN106317595A (en) * 2016-08-24 2017-01-11 安徽顺彤包装材料有限公司 Food packaging material and preparing method thereof
CN107312203A (en) * 2017-08-24 2017-11-03 安徽省天乐塑业有限公司 A kind of antimicrobial form starchiness packaging material and its processing method

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CN102140215A (en) * 2010-01-29 2011-08-03 上海亿金纳米科技有限公司 Preparation method of novel photodegradable antibacterial master batch
CN104927318A (en) * 2014-03-21 2015-09-23 天津优致科技有限公司 Degradable plastic packaging bag

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CN102140215A (en) * 2010-01-29 2011-08-03 上海亿金纳米科技有限公司 Preparation method of novel photodegradable antibacterial master batch
CN104927318A (en) * 2014-03-21 2015-09-23 天津优致科技有限公司 Degradable plastic packaging bag

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106189140A (en) * 2016-07-29 2016-12-07 无锡龙盈环保科技有限公司 A kind of degradable food fresh keeping membrane and preparation method thereof
CN106317595A (en) * 2016-08-24 2017-01-11 安徽顺彤包装材料有限公司 Food packaging material and preparing method thereof
CN107312203A (en) * 2017-08-24 2017-11-03 安徽省天乐塑业有限公司 A kind of antimicrobial form starchiness packaging material and its processing method

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Application publication date: 20160727