CN110358264A - A kind of biology base enviroment protective packing bag and preparation method thereof - Google Patents
A kind of biology base enviroment protective packing bag and preparation method thereof Download PDFInfo
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- CN110358264A CN110358264A CN201910235442.7A CN201910235442A CN110358264A CN 110358264 A CN110358264 A CN 110358264A CN 201910235442 A CN201910235442 A CN 201910235442A CN 110358264 A CN110358264 A CN 110358264A
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- 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
- B65D65/46—Applications of disintegrable, dissolvable or edible materials
- B65D65/466—Bio- or photodegradable packaging materials
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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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2248—Oxides; Hydroxides of metals of copper
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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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
- C08K3/34—Silicon-containing compounds
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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
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The present invention provides a kind of biology base enviroment protective packing bag and preparation method thereof, packaging bag includes the component of following weight fraction: 20-40 parts of cornstarch, PBAT50-70 parts, PLA10-20 parts, 5-10 parts of glycerol, 0.1-1 parts of maleic anhydride, 1-5 parts of ethylene-vinyl acetate copolymer, 0.1-1 parts of opening agent, 1-3 parts of antibacterial agent, 1-3 parts of talcum powder, 1-3 parts of calcium carbonate, 0.1-1 parts of chain extender；Preparation method are as follows: raw material pre-treatment-raw material mixing-extruding pelletization-pellet mixes-squeezes out blown film-winding and packaging bag is made；Biology base enviroment protective packing bag of the invention improves degradation property of the invention using starch, PBAT, PLA as raw material, environmentally protective, reduces costs simultaneously, reduces the consumption of petroleum-based sources；And the antibacterial and mouldproof performance for improving packaging bag, ensure that the safety of food, and intensity is big when using, water-fast, oil resistant, durable；Packaging bag is made by inflation film manufacturing machine Blown Film, specification is controllable, and it is applied widely, while being conducive to large-scale industrial production, convenient for promoting.
Description
Technical field
The present invention relates to biological packing material technical field more particularly to a kind of biology base enviroment protective packing bag and its preparations
Method.
Background technique
China allow using packaging material for food it is many kinds of, wherein plastics are because plasticity is strong, production cost is low, matter
Measure the features such as light is widely used in food packaging applications.However, the extensive application of plastics makes the packaging that the whole world generates every year
Rubbish is up to 0.6 hundred million tons, and wherein the annual plastics package rubbish in China is about 2,800,000 tons.Plastic food packaging materials make
With the petroleum resources for not only wasting China's preciousness, huge pressure also is brought to environmental protection.In order to comply with the world to ring
The trend of border protection, widelys popularize the hair that safe and non-toxic biology base packaging material for food has become food packaging industry future
Exhibition trend.Biology base packaging material for food compared with common material, in use will not by from a wealth of sources and nonhazardous
There are security risks, while handling to be decomposed by the microorganisms after burial when discarding packaging and not will cause environmental pollution for inorganic matter.?
It is even more to be concerned using reproducible plant resources as the research and development of the material of raw material in numerous biomaterials.Such as to form sediment
Powder, straw etc. be that the biological based high molecular of monomer source or raw material not only has good biological degradability, and takes no
To the greatest extent, rich and easy to get.
Polylactic acid (PLA) is a kind of important biodegradable material, have good degradability, biocompatibility,
Mechanical performance and the transparency are widely used in packaged food, but its brittleness is larger.Polybutyleneadipate-terephthalic acid (TPA)
Butanediol ester (PBAT) has good toughness, and the two, which combines, can be realized performance complement, but since there are aromatic series chains by PBAT
Section, so that degradation efficiency is lower.Starch source can reduce the cost of Biodegradable material in plant resources and renewable,
And improve degradability.Such as patent " CN109161173A " discloses a kind of controllable starch and biodegradable agricultural mulching,
Modified starch based composites and sugarcane fibre element are added in the blend of PLA and PBAT, can reduce production cost, and
And change degradation speed and degradation efficiency, the good biodegradability of mulch is assigned, but the compatibility of PLA and PBAT is not
Good, so that the mechanical property of material reduces, service life is short；As covering with ground sheeting crop, there is biggish humidity, easily under film
Various bacteriums are bred, anti-microbial property is not high, furthermore easily bonds between film during film take-up.Patent
" CN109111709A " discloses a kind of PLA/PBAT biodegradable composite containing cornstarch and its preparation side
Method is formed sediment including PLA, PBAT, the cornstarch of coupling processing, DCP and BPO so that the compatibility of PBAT and PLA enhances simultaneously
The compatibility of powder and PLA also enhance, but its anti-microbial property is not high.
Summary of the invention
To overcome following problems existing in the prior art, anti-microbial property is poor, mechanical property is low, service life is short etc. is asked
Topic, the present invention provides a kind of biology base enviroment protective packing bags, it is characterised in that: the component comprising following parts by weight: corn forms sediment
20-40 parts of powder, PBAT50-70 parts, PLA10-20 parts, 5-10 parts of glycerol, 0.1-1 parts of maleic anhydride, ethylene-vinyl acetate
- 5 parts of copolymer 1,0.1-1 parts of opening agent, 1-3 parts of antibacterial agent, 1-3 parts of talcum powder, 1-3 parts of calcium carbonate, 0.1-1 parts of chain extender.
On this basis, the chain extender is one of ADR-4370 or ADR-4380 or a variety of.
On this basis, the opening agent is one of oleamide or erucyl amide or a variety of.
On this basis, the antibacterial agent is one of zinc oxide, copper oxide and ammonium dihydrogen phosphate or a variety of.
A kind of preparation method of biology base enviroment protective packing bag, it is characterised in that: comprise the steps of:
S1: cornstarch, PBAT and PLA are subjected to vacuum drying pre-treatment；
S2: by the cornstarch and PBAT addition high mixer by vacuum drying pre-treatment, and glycerol, horse are added simultaneously
Come acid anhydrides, opening agent, talcum powder and calcium carbonate, is uniformly mixed；
S3: the raw material being uniformly mixed in S2 step is added to the hopper of double screw extruder, melts and conveys by twin-screw
Extruding pelletization later obtains the pellet that diameter is 3mm；
S4: high mixer is added in the pellet that S3 step is obtained and the PLA by vacuum drying pre-treatment, and is added simultaneously
Ethylene-vinyl acetate copolymer and chain extender are uniformly mixed；
The material being uniformly mixed in S4 step: being added the hopper of inflation film manufacturing machine by S5, melts conveying by the screw rod of inflation film manufacturing machine
Blown film is squeezed out later；
S6: packaging bag is made in the film take-up in S5 step.
On this basis, each section of twin-screw of temperature is controlled at 155-165 DEG C in the S3 step.
On this basis, the temperature of each section of screw rod is controlled at 145-170 DEG C in the S5 step.
On this basis, the temperature of the S2 and S4 step high speed mixing is 110-130 DEG C.
On this basis, the drying temperature of PSAT and PLA is 80 DEG C in the S1 step, and the time is 4 hours.
On this basis, the drying temperature of cornstarch is 120 DEG C in the S1 step, and the time is 8 hours.
Compared with prior art, the beneficial effects of the present invention are:
1, for biology base enviroment protective packing bag of the invention using starch, PBAT, PLA as raw material, the addition of starch reduces petroleum
The consumption of base resource is reduced for material from source, reduces costs；Starch is modified using maleic anhydride, shallow lake can be improved
The compatibility of powder and PBAT, PLA can be in specific item after use so as to improve the degradation property of packaging bag of the present invention
Composting treatment under part can be degraded by microorganisms completely, generate CO2And H2O, can also be with burning disposal, without nitridation when burning
The toxic gases such as object or sulfide generate, environmentally protective.
2, the ingredient that joined antibacterial agent in biology base enviroment protective packing bag of the invention, further improves packaging bag
Antibacterial and mouldproof performance ensure that the safety of food.
3, the present invention uses ethylene-vinyl acetate for compatilizer, so that having between PLA and PBAT preferable compatible
Property, between PBAT and PLA can performance complement so that biology base enviroment protective packing bag of the invention have preferable toughness.
4, it joined a small amount of chain extender in biology base enviroment protective packing bag of the invention, for improving the molecule of polymer
Amount, so that packaging bag of the invention mechanical property with higher, while its degradation property is not influenced；It joined a small amount of
Opening agent, such that packaging bag is water-fast, oil resistant, improve the service life of packaging bag of the present invention.
5, for the present invention by inflation film manufacturing machine Blown Film, film thickness, specification are controllable, can be made into plurality of specifications according to demand
Packaging bag, it is applied widely, while being conducive to large-scale industrial production, convenient for promoting.
Specific embodiment
With reference to embodiments, the present invention will be described in further detail.It should be appreciated that described herein specific
Embodiment only to explain the present invention, is not intended to limit the present invention.
Embodiment 1:
A kind of biology base enviroment protective packing bag that the embodiment of the present invention 1 provides, which includes following heavy
Measure the component of number: 25 parts of cornstarch, PBAT55 parts, PLA15 parts, 5 parts of glycerol, 0.3 part of maleic anhydride, ethyl vinyl acetate second
2 parts of enoate copolymer, 0.2 part of oleamide, 1 part of talcum powder, 1 part of calcium carbonate, 0.2 part of ADR-4370,1 part of zinc oxide.
Wherein: cornstarch, PBAT, PLA are raw material, and the addition of cornstarch reduces the consumption of petroleum-based sources, from
It is reduced, reduces costs for material on source；Maleic anhydride is modification of corn starch agent, and cornstarch and PBAT, PLA can be improved
Compatibility, improve the degradation property of packaging bag of the present invention, can be by packaging bag Composting under given conditions after use
Processing, can be degraded by microorganisms completely, generate CO2And H2O, can also be with burning disposal, without nitride or sulfide when burning
Equal toxic gases generate, environmentally protective；Ethylene-vinyl acetate co-polymer is compatilizer, so that having between PLA and PBAT
Preferable compatibility, between PBAT and PLA can performance complement so that packaging bag of the invention have preferable toughness；Oleic acid
Amide is opening agent, can improve water-fast, the oil resistance of packaging bag；ADR-4370 is chain extender, does not influence its degradability
The molecular weight that polymer is improved while energy, so that packaging bag of the invention mechanical property with higher, improves packet
The service life of pack；Zinc oxide is antibacterial agent, improves antibacterial and mouldproof performance of the invention, guarantees the safety of food.
Embodiment 2:
A kind of biology base enviroment protective packing bag that the embodiment of the present invention 2 provides, which includes following heavy
Measure the component of number: 25 parts of cornstarch, PBAT60 parts, PLA15 parts, 5 parts of glycerol, 0.2 part of maleic anhydride, ethyl vinyl acetate second
2 parts of enoate copolymer, 0.3 part of oleamide, 1 part of talcum powder, 1 part of calcium carbonate, 0.2 part of ADR-4370,1 part of zinc oxide.
Wherein: cornstarch, PBAT, PLA are raw material, and the addition of cornstarch reduces the consumption of petroleum-based sources, from
It is reduced, reduces costs for material on source；Maleic anhydride is modification of corn starch agent, and cornstarch and PBAT, PLA can be improved
Compatibility, improve the degradation property of packaging bag of the present invention, can be by packaging bag Composting under given conditions after use
Processing, can be degraded by microorganisms completely, generate CO2And H2O, can also be with burning disposal, without nitride or sulfide when burning
Equal toxic gases generate, environmentally protective；Ethylene-vinyl acetate co-polymer is compatilizer, so that having between PLA and PBAT
Preferable compatibility, between PBAT and PLA can performance complement so that packaging bag of the invention have preferable toughness；Oleic acid
Amide is opening agent, can improve water-fast, the oil resistance of packaging bag；ADR-4370 is chain extender, does not influence its degradability
The molecular weight that polymer is improved while energy, so that packaging bag of the invention mechanical property with higher, improves packet
The service life of pack；Zinc oxide is antibacterial agent, improves antibacterial and mouldproof performance of the invention, guarantees the safety of food.
Embodiment 3:
A kind of biology base enviroment protective packing bag that the embodiment of the present invention 3 provides, which includes following heavy
Measure the component of number: 30 parts of cornstarch, PBAT50 parts, PLA10 parts, 10 parts of glycerol, 0.2 part of maleic anhydride, ethyl vinyl acetate
3 parts of vinyl ester copolymers, 0.2 part of oleamide, 2 parts of talcum powder, 1 part of calcium carbonate, 0.2 part of ADR-4370,2 parts of zinc oxide.
Wherein: cornstarch, PBAT, PLA are raw material, and the addition of cornstarch reduces the consumption of petroleum-based sources, from
It is reduced, reduces costs for material on source；Maleic anhydride is modification of corn starch agent, and cornstarch and PBAT, PLA can be improved
Compatibility, improve the degradation property of packaging bag of the present invention, can be by packaging bag Composting under given conditions after use
Processing, can be degraded by microorganisms completely, generate CO2And H2O, can also be with burning disposal, without nitride or sulfide when burning
Equal toxic gases generate, environmentally protective；Ethylene-vinyl acetate co-polymer is compatilizer, so that having between PLA and PBAT
Preferable compatibility, between PBAT and PLA can performance complement so that packaging bag of the invention have preferable toughness；Oleic acid
Amide is opening agent, can improve water-fast, the oil resistance of packaging bag；ADR-4370 is chain extender, does not influence its degradability
The molecular weight that polymer is improved while energy, so that packaging bag of the invention mechanical property with higher, improves packet
The service life of pack；Zinc oxide is antibacterial agent, improves antibacterial and mouldproof performance of the invention, guarantees the safety of food.
Embodiment 4:
A kind of biology base enviroment protective packing bag that the embodiment of the present invention 4 provides, which includes following heavy
Measure the component of number: 30 parts of cornstarch, PBAT55 parts, PLA10 parts, 10 parts of glycerol, 0.3 part of maleic anhydride, ethyl vinyl acetate
2 parts of vinyl ester copolymers, 0.2 part of oleamide, 2 parts of talcum powder, 1 part of calcium carbonate, 0.2 part of ADR-4370,2 parts of zinc oxide.
Wherein: cornstarch, PBAT, PLA are raw material, and the addition of cornstarch reduces the consumption of petroleum-based sources, from
It is reduced, reduces costs for material on source；Maleic anhydride is modification of corn starch agent, and cornstarch and PBAT, PLA can be improved
Compatibility, improve the degradation property of packaging bag of the present invention, can be by packaging bag Composting under given conditions after use
Processing, can be degraded by microorganisms completely, generate CO2And H2O, can also be with burning disposal, without nitride or sulfide when burning
Equal toxic gases generate, environmentally protective；Ethylene-vinyl acetate co-polymer is compatilizer, so that having between PLA and PBAT
Preferable compatibility, between PBAT and PLA can performance complement so that packaging bag of the invention have preferable toughness；Oleic acid
Amide is opening agent, can improve water-fast, the oil resistance of packaging bag；ADR-4370 is chain extender, does not influence its degradability
The molecular weight that polymer is improved while energy, so that packaging bag of the invention mechanical property with higher, improves packet
The service life of pack；Zinc oxide is antibacterial agent, improves antibacterial and mouldproof performance of the invention, guarantees the safety of food.
Table 1 shows the dissimilarity after under different ratio, obtaining different biology base enviroment protective packing bags in embodiment 1-4
Energy parameter:
Table 1:
Embodiment 5:
The preparation for 1,2,3 or 4 any one biology base enviroment protective packing bag of above-described embodiment that the embodiment of the present invention 5 provides
Method, comprising the following steps:
S1: cornstarch is put into in 120 DEG C of vacuum oven dry 8h, PBAT and PLA are put into 80 DEG C of vacuum
Dry 4h is spare in drying box；
S2: the cornstarch for passing through vacuum drying pre-treatment and PBAT are added in high mixer, and glycerol, Malaysia is added
Acid anhydrides, oleamide, talcum powder and calcium carbonate are uniformly mixed；
S3: the raw material being uniformly mixed in S2 step is added in the barrel of double screw extruder, screw rod feeding section temperature is controlled
Degree is 155 DEG C, and compression section temperature is 165 DEG C, and homogenizing zone temperature is 165 DEG C, is granulated after screw rod melting extrusion, is obtained straight
Diameter is the pellet of 3mm；
S4: high mixer is added with the PLA being dried in vacuo in the pellet that S3 step obtains, and ethylene-vinyl acetate is added
Ester copolymer and ADR-4370 are uniformly mixed；
S5: the material being uniformly mixed in S4 step is added in the hopper of inflation film manufacturing machine, and control screw rod feeding section temperature is
150 DEG C, compression section temperature is 160 DEG C, and homogenizing zone temperature is 160 DEG C, the Blown Film after screw rod melting extrusion；
S6: packaging bag is made in film winding.
For the present invention by inflation film manufacturing machine Blown Film, film thickness, specification are controllable, can be made into plurality of specifications according to demand
Packaging bag, it is applied widely, while being conducive to large-scale industrial production, convenient for promoting.
Embodiment 6:
The preparation for 1,2,3 or 4 any one biology base enviroment protective packing bag of above-described embodiment that the embodiment of the present invention 6 provides
Method, comprising the following steps:
S1: cornstarch is put into in 120 DEG C of vacuum oven dry 8h, PBAT and PLA are put into 80 DEG C of vacuum
Dry 4h is spare in drying box；
S2: the cornstarch for passing through vacuum drying pre-treatment and PBAT are added in high mixer, and glycerol, Malaysia is added
Acid anhydrides, oleamide, talcum powder and calcium carbonate are uniformly mixed；
S3: the raw material being uniformly mixed in S2 step is added in the barrel of double screw extruder, screw rod feeding section temperature is controlled
Degree is 160 DEG C, and compression section temperature is 165 DEG C, and homogenizing zone temperature is 165 DEG C, is granulated after screw rod melting extrusion, is obtained straight
Diameter is the pellet of 3mm；
S4: high mixer is added with the PLA being dried in vacuo in the pellet that S3 step obtains, and ethylene-vinyl acetate is added
Ester copolymer and ADR-4370 are uniformly mixed；
S5: the material being uniformly mixed in S4 step is added in the hopper of inflation film manufacturing machine, and control screw rod feeding section temperature is
155 DEG C, compression section temperature is 165 DEG C, and homogenizing zone temperature is 165 DEG C, the Blown Film after screw rod melting extrusion；
S6: packaging bag is made in film winding.
For the present invention by inflation film manufacturing machine Blown Film, film thickness, specification are controllable, can be made into plurality of specifications according to demand
Packaging bag, it is applied widely, while being conducive to large-scale industrial production, convenient for promoting.
Embodiment 7:
The preparation for 1,2,3 or 4 any one biology base enviroment protective packing bag of above-described embodiment that the embodiment of the present invention 7 provides
Method, comprising the following steps:
S1: cornstarch is put into in 120 DEG C of vacuum oven dry 8h, PBAT and PLA are put into 80 DEG C of vacuum
Dry 4h is spare in drying box；
S2: the cornstarch for passing through vacuum drying pre-treatment and PBAT are added in high mixer, and glycerol, Malaysia is added
Acid anhydrides, oleamide, talcum powder and calcium carbonate are uniformly mixed；
S3: the raw material being uniformly mixed in S2 step is added in the barrel of double screw extruder, screw rod feeding section temperature is controlled
Degree is 160 DEG C, and compression section temperature is 165 DEG C, and homogenizing zone temperature is 160 DEG C, is granulated after screw rod melting extrusion, is obtained straight
Diameter is the pellet of 3mm；
S4: high mixer is added with the PLA being dried in vacuo in the pellet that S3 step obtains, and ethylene-vinyl acetate is added
Ester copolymer and ADR-4370 are uniformly mixed；
S5: the material being uniformly mixed in S4 step is added in the hopper of inflation film manufacturing machine, and control screw rod feeding section temperature is
155 DEG C, compression section temperature is 165 DEG C, and homogenizing zone temperature is 170 DEG C, the Blown Film after screw rod melting extrusion；
S6: packaging bag is made in film winding.
For the present invention by inflation film manufacturing machine Blown Film, film thickness, specification are controllable, can be made into plurality of specifications according to demand
Packaging bag, it is applied widely, while being conducive to large-scale industrial production, convenient for promoting.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
It is limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification
And environment, and can be carried out within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
Change.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be in institute of the present invention
In attached scope of protection of the claims.
Claims (10)
1. a kind of biology base enviroment protective packing bag, it is characterised in that: the component comprising following parts by weight: 20-40 parts of cornstarch,
PBAT50-70 parts, PLA10-20 parts, 5-10 parts of glycerol, 0.1-1 parts of maleic anhydride, 1-5 parts of ethylene-vinyl acetate copolymer,
0.1-1 parts of opening agent, 1-3 parts of antibacterial agent, 1-3 parts of talcum powder, 1-3 parts of calcium carbonate, 0.1-1 parts of chain extender.
2. a kind of biology base enviroment protective packing bag according to claim 1, it is characterised in that: the chain extender is ADR-
One of 4370 or ADR-4380 are a variety of.
3. a kind of biology base enviroment protective packing bag according to claim 1, it is characterised in that: the opening agent is oleic acid acyl
One of amine or erucyl amide are a variety of.
4. a kind of biology base enviroment protective packing bag according to claim 1, it is characterised in that: the antibacterial agent is oxidation
One of zinc, copper oxide and ammonium dihydrogen phosphate are a variety of.
5. a kind of preparation method of biology base enviroment protective packing bag as described in claim 1, it is characterised in that: include following step
It is rapid:
S1: cornstarch, PBAT and PLA are subjected to vacuum drying pre-treatment；
S2: by the cornstarch and PBAT addition high mixer by vacuum drying pre-treatment, and glycerol, maleic acid are added simultaneously
Acid anhydride, opening agent, talcum powder and calcium carbonate are uniformly mixed；
The raw material being uniformly mixed in S2 step: being added the hopper of double screw extruder by S3, after twin-screw melting conveying
Extruding pelletization obtains the pellet that diameter is 3mm；
S4: high mixer is added in the pellet that S3 step is obtained and the PLA by vacuum drying pre-treatment, and ethylene-is added simultaneously
Vinyl acetate co-polymer and chain extender are uniformly mixed；
The material being uniformly mixed in S4 step: being added the hopper of inflation film manufacturing machine by S5, after the screw rod melting conveying of inflation film manufacturing machine
Squeeze out blown film；
S6: packaging bag is made in the film take-up in S5 step.
6. a kind of preparation method of biology base enviroment protective packing bag according to claim 4, it is characterised in that: the S3 step
The temperature of each section of middle twin-screw is controlled at 155-165 DEG C.
7. a kind of preparation method of biology base enviroment protective packing bag according to claim 4, it is characterised in that: the S5 step
The temperature of each section of middle screw rod is controlled at 145-170 DEG C.
8. a kind of preparation method of biology base enviroment protective packing bag according to claim 4, it is characterised in that: the S2 and S4
The temperature of step high speed mixing is 110-130 DEG C.
9. a kind of preparation method of biology base enviroment protective packing bag according to claim 4, it is characterised in that: the S1 step
The drying temperature of middle PSAT and PLA is 80 DEG C, and the time is 4 hours.
10. a kind of preparation method of biology base enviroment protective packing bag according to claim 4, it is characterised in that: the S1 step
The drying temperature of cornstarch is 120 DEG C in rapid, and the time is 8 hours.
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| CN112662145A (en) * | 2020-12-21 | 2021-04-16 | 内蒙古农业大学 | Bacteriostatic degradable respiratory membrane with self-contraction performance, preparation method and application |
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| CN113956625A (en) * | 2021-11-04 | 2022-01-21 | 浙江通力新材料科技股份有限公司 | Antibacterial biodegradable plastic film and preparation method thereof |
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Denomination of invention: A bio-based environmental protection packaging bag and its preparation method Effective date of registration: 20230227 Granted publication date: 20220809 Pledgee: Jiangsu Jiangnan Rural Commercial Bank Limited by Share Ltd. Pledgor: CHANGZHOU LONGJUN SKYPURL ENVIRONMENT PROTECTION TECHNOLOGY CO.,LTD. Registration number: Y2023320000110 |