CN106496762A - A kind of Degradable environment-friendlyplastic plastic and preparation method thereof - Google Patents
A kind of Degradable environment-friendlyplastic plastic and preparation method thereof Download PDFInfo
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
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Abstract
The present invention relates to a kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：53～90 parts of Film grade polyethylene, 48～85 parts of microcrystalline cellulose, 48～85 parts of thermoplastic starch, 45～90 parts of ethylene and acrylic acid copolymer, 45～90 parts of polyvinyl alcohol, 42～70 parts of film-grade PLA, 36～65 parts of polyhydroxyalkanoate, 36～65 parts of triphenyl phosphite, 20～30 parts of plasticizer, 15～30 parts of lignin, 12～30 parts of vegetable colour, also disclose its preparation method.The plastic products that the present invention is produced being capable of auto-degradation, will not be a kind of real green plastic, with good flexibility, oil-proof composition and heat sealability to environment and destruction soil texture, the vegetable colour of addition not only has pigmentation, and also there is certain antibiotic property.
Description
Technical field
The invention belongs to plastics arts, and in particular to a kind of Degradable environment-friendlyplastic plastic and preparation method thereof.
Background technology
It is well known that polybag with plastic sheeting making is light, thin, waterproof, intensity is larger, low cost, be a kind of very
Good packaging material, the life that the use of polybag gives people bring great convenience, because its light weight, intensity high, chemical
Stable performance and cheap the advantages of and in many field broad developments, but be not easily recycled due to used waste plastic bag, especially
It is not degradable, is typically all to dispose as solid waste mostly, causes and form the pollutants such as acid rain in atmosphere, to nature
The pollution of environment is increasingly severe, causes serious harm to our life.
In order to mitigate pollution of the plastic sheeting to environment, people have developed some Degradable environment-friendlyplastic plastic films in succession.
Degradable environment-friendlyplastic plastic film is film, and its constituent has film-grade plastics and plastics can be caused to produce the composition of explanation, such as
Starch, calcium carbonate etc., but this Degradable environment-friendlyplastic plastic film is addition type Degradable environment-friendlyplastic plastic film, and addition type is degradable
Environmentally-friendly plastic film is to improve environment to have played certain positive role.But the technique of this Degradable environment-friendlyplastic plastic processing film
The plastic sheeting the physical property of product and outward appearance that performance is bad, make is poor；In addition, the degraded of this Degradable environment-friendlyplastic plastic film is needed
Want certain rigid condition, and the environment after plastic sheeting is discarded, or being laid in the refuse disposal system of closing, or
Just it is an exposure in the unfixed natural environment of condition, it is difficult to ensure that the rigid condition required for this degradation of plastic film, this
A little degradative plastics in most of the cases, either in refuse disposal system or in natural environment because subject to conditions and
Can not degrade well.
Content of the invention
It is an object of the invention to：For above-mentioned deficiency, the invention provides a kind of Degradable environment-friendlyplastic plastic and
Its preparation method.The plastic products that the present invention is produced can auto-degradation, will not to environment and destruction soil
Structure, is a kind of real green plastic.Abundant raw material source, preparation method are simple, quick, with low cost.
In order to achieve the above object, technical scheme below present invention employs：
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：53～90 parts of Film grade polyethylene, microcrystalline cellulose
48～85 parts, 48～85 parts of thermoplastic starch, 45～90 parts of ethylene and acrylic acid copolymer, 45～90 parts of polyvinyl alcohol, film
Level 42～70 parts of PLA, 36～65 parts of polyhydroxyalkanoate, 36～65 parts of triphenyl phosphite, 20～30 parts of plasticizer,
15～30 parts of lignin, 12～30 parts of vegetable colour.
Further, a kind of described Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：Film grade polyethylene
68 parts, 68 parts of microcrystalline cellulose, 65 parts of thermoplastic starch, 66 parts of ethylene and acrylic acid copolymer, 66 parts of polyvinyl alcohol, film-grade
56 parts of PLA, 50 parts of polyhydroxyalkanoate, 50 parts of triphenyl phosphite, 25 parts of plasticizer, 22 parts of lignin, vegetable colour
22 parts.
Further, a kind of described Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：Film grade polyethylene
60～75 parts, 60～75 parts of microcrystalline cellulose, 60～75 parts of thermoplastic starch, 55～80 parts of ethylene and acrylic acid copolymer, poly-
55～80 parts of vinyl alcohol, 53～60 parts of film-grade PLA, 45～55 parts of polyhydroxyalkanoate, triphenyl phosphite 45～55
Part, 23～28 parts of plasticizer, 20～25 parts of lignin, 18～25 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE, or film-grade is linearly low
Density polyethylene and the mixing of Film grade low density polyethylene, or film-grade LLDPE and film level high-density
Polyethylene mixes.
Further, the thermoplastic starch is cornstarch, farina, starch from sweet potato, appointing in tapioca
Meaning is a kind of.
Further, the plasticizer be glycerine, ethylene glycol, one or more mixing in polyethylene glycol.
Further, the vegetable colour is extracted from the plant of extractable pigment, described containing extractable pigment
Plant be madder, purplish red bluegrass, butterflybush flower, Yellow Fructus Gardeniae, indigo, safflower, spinach, sweet potato leaves, pumpkin, Chinese ilex, cape jasmine, ginger
One or more plants in yellow, red back of the body dish, red bluegrass, purple perilla.
Further, a kind of preparation method of described Degradable environment-friendlyplastic plastic, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, under the speed of 1200～1400r/min stir 30～35min,
Mix uniformly miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1000～1200r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 140～155 DEG C, the heating-up temperature of the second segment of screw rod is 155～175 DEG C, the 3rd section of screw rod of heating-up temperature is 175
～195 DEG C, the heating-up temperature of die head is 200～220 DEG C；Film mechanical performance is checked after film forming, is entered by specification after the assay was approved
Row is sealed, is cut, packing, and obtains final product Degradable environment-friendlyplastic plastic.
Wherein, polyvinyl alcohol English name：PolyvinylAlcohol, referred to as：PVA, molecular formula are (C2H4O) n.Poly- second
Enol is a kind of white powder or granular water soluble macromolecule resin, is obtained by polyvinyl acetate ester hydrolysis.Polyvinyl alcohol
The features such as by its excellent biodegradability, resistance to chemical reagents, bio-compatibility, physical property so as to industrial and daily
It is widely used in life.Polyvinyl alcohol course of dissolution is：Affine wetting-swelling-infinite swelling-dissolving.Polyvinyl alcohol with hydrophilic
Property cellulose cohesive force preferably, and its adhesion strength is affected by the degree of polymerization, alcoholysis degree, generally, the degree of polymerization, alcoholysis
Degree is higher, and adhesion strength is bigger, can serve as binding agent；Polyvinyl alcohol has surface-active, can reduce the surface tension of water, because
This can be used as emulsifying agent or dispersant；Polyvinyl alcohol filming performance is good, and its inflation film has preferable mechanical performance, and
The degree of polymerization, alcoholysis degree are higher, and film tensile strength is stronger；Polyvinyl alcohol is the very high polymerization of a kind of environmental protection, nontoxic, security
Thing, applies widely in daily production and life；Polyvinyl alcohol can form very tough, tear-resistant film, film resistance to
Mill better performances, due to these good characteristics of polyvinyl alcohol, which is used for packaged food, not only oxygen barrier, protect color, guarantee the quality, resistance to
Oil, and nontoxic, therefore, it is well suited as the packaging material of food.The degradability of polyvinyl alcohol causes which to process
Film, in soil can by bacterial degradation be CO2 and H2O, solve pollution problem of the plastics difficult degradation to environment, can use
In non-returnable container bag etc..The present invention is suitable for the polyvinyl alcohol of any degree of polymerization and viscosity.
PLA（PLA）Also referred to as polylactide, belongs to polyester family, and much amyloid crops can serve as making
The raw material of standby PLA, the primary raw material of PLA is corn, so PLA is commonly called as " the north material of corn ".PLA has good
Good tensile strength and extensibility, can make film with the method for blowing, and the film that makes has good glossiness and thoroughly
Lightness, nontoxic to human body, it is suitable to make food-grade packaging bag.Polylactic acid film stable performance at normal temperatures, in environment temperature
Degree can automatic classifying higher than 55 DEG C or in the presence of oxygen-enriched and microorganism.Polylactic acid film after discarded can be by micro- in nature
Biological degradable digestion, ultimately generates carbon dioxide and water, and PLA is preferable complete-degradable plastic.Poly- with film-grade
Lactic acid may be made with the degradation plastic of different degradation speeds from Film grade polyethylene plastic blend.
The raw cellulose of microcrystalline cellulose is to be distributed a kind of most most natural organic high-molecular of wide, content in nature
Material, can be produced by plant, and wide material sources, cost are relatively low, and a kind of low cost, environment-friendly type raw material.Due to cellulose and
All contain substantial amounts of hydroxyl in polyvinyl alcohol, therefore can form intermolecular hydrogen bonding, form higher intermolecular force, have
Preferable compatibility.
In sum, the present invention is had the positive effect that as a result of such scheme：The modeling that the present invention is produced
Material products can auto-degradation, will not be to environment and destruction soil texture, product can be recycled again, be a kind of
Real green plastic, with good flexibility, oil-proof composition and heat sealability, the vegetable colour of addition not only has coloring
Effect, also has certain antibiotic property.Abundant raw material source, preparation method are simple, quick, with low cost.
Specific embodiment
With reference to embodiment to a kind of Degradable environment-friendlyplastic plastic of the invention and preparation method thereof, it is described further.
Embodiment 1
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：53 parts of Film grade polyethylene, microcrystalline cellulose 48
Part, 48 parts of thermoplastic starch, 45 parts of ethylene and acrylic acid copolymer, 45 parts of polyvinyl alcohol, 42 parts of film-grade PLA, poly- hydroxyl
36 parts of fatty acid ester, 36 parts of triphenyl phosphite, 20 parts of plasticizer, 15 parts of lignin, 12 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE；The thermoplastic starch is jade
Rice starch；The plasticizer is glycerine；The vegetable colour is extracted from the plant of extractable pigment, described containing can carry
The plant for taking pigment is purple butterflybush flower, Yellow Fructus Gardeniae, turmeric.
A kind of preparation method of Degradable environment-friendlyplastic plastic described above, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, stir 30min under the speed of 1200r/min, and mixing is uniformly
Miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1000r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 140 DEG C, the heating-up temperature of the second segment of screw rod is 155 DEG C, the 3rd section of screw rod of heating-up temperature is 175 DEG C, die head
Heating-up temperature is 200 DEG C；Film mechanical performance is checked after film forming, is carried out sealing, cut, packed, i.e., by specification after the assay was approved
Obtain Degradable environment-friendlyplastic plastic.
Embodiment 2
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：90 parts of Film grade polyethylene, microcrystalline cellulose 85
Part, 85 parts of thermoplastic starch, 90 parts of ethylene and acrylic acid copolymer, 90 parts of polyvinyl alcohol, 70 parts of film-grade PLA, poly- hydroxyl
65 parts of fatty acid ester, 65 parts of triphenyl phosphite, 30 parts of plasticizer, 30 parts of lignin, 30 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE and Film grade low density polyethylene
Mixing；The thermoplastic starch is farina；The plasticizer is ethylene glycol；The vegetable colour is from extractable pigment
Extract in plant, the plant containing extractable pigment is indigo purplish red bluegrass, cape jasmine, red bluegrass, purple perilla.
A kind of preparation method of Degradable environment-friendlyplastic plastic described above, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, stir 35min under the speed of 1400r/min, and mixing is uniformly
Miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1200r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 155 DEG C, the heating-up temperature of the second segment of screw rod is 175 DEG C, the 3rd section of screw rod of heating-up temperature is 195 DEG C, die head
Heating-up temperature is 220 DEG C；Film mechanical performance is checked after film forming, is carried out sealing, cut, packed, i.e., by specification after the assay was approved
Obtain Degradable environment-friendlyplastic plastic.
Embodiment 3
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：68 parts of Film grade polyethylene, microcrystalline cellulose 68
Part, 65 parts of thermoplastic starch, 66 parts of ethylene and acrylic acid copolymer, 66 parts of polyvinyl alcohol, 56 parts of film-grade PLA, poly- hydroxyl
50 parts of fatty acid ester, 50 parts of triphenyl phosphite, 25 parts of plasticizer, 22 parts of lignin, 22 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE and film level high-density polyethylene
Mixing；The thermoplastic starch is starch from sweet potato；The plasticizer is polyethylene glycol；The vegetable colour is from extractable pigment
Extract in plant, the plant containing extractable pigment is madder, safflower, pumpkin, cape jasmine, red back of the body dish, red bluegrass.
A kind of preparation method of Degradable environment-friendlyplastic plastic described above, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, stir 33min under the speed of 1300r/min, and mixing is uniformly
Miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1100r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 148 DEG C, the heating-up temperature of the second segment of screw rod is 165 DEG C, the 3rd section of screw rod of heating-up temperature is 185 DEG C, die head
Heating-up temperature is 210 DEG C；Film mechanical performance is checked after film forming, is carried out sealing, cut, packed, i.e., by specification after the assay was approved
Obtain Degradable environment-friendlyplastic plastic.
Embodiment 4
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：60 parts of Film grade polyethylene, microcrystalline cellulose 60
Part, 60 parts of thermoplastic starch, 55 parts of ethylene and acrylic acid copolymer, 55 parts of polyvinyl alcohol, 53 parts of film-grade PLA, poly- hydroxyl
45 parts of fatty acid ester, 45 parts of triphenyl phosphite, 23 parts of plasticizer, 20 parts of lignin, 18 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE；The thermoplastic starch is wood
Sweet potato starch；The plasticizer is glycerine, ethylene glycol；The vegetable colour is extracted from the plant of extractable pigment, described
Plant containing extractable pigment is spinach, sweet potato leaves, Chinese ilex.
A kind of preparation method of Degradable environment-friendlyplastic plastic described above, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, stir 31min under the speed of 1250r/min, and mixing is uniformly
Miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1050r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 145 DEG C, the heating-up temperature of the second segment of screw rod is 160 DEG C, the 3rd section of screw rod of heating-up temperature is 180 DEG C, die head
Heating-up temperature is 205 DEG C；Film mechanical performance is checked after film forming, is carried out sealing, cut, packed, i.e., by specification after the assay was approved
Obtain Degradable environment-friendlyplastic plastic.
Embodiment 5
A kind of Degradable environment-friendlyplastic plastic, is made up of the raw material of following weight portion：75 parts of Film grade polyethylene, microcrystalline cellulose 75
Part, 75 parts of thermoplastic starch, 80 parts of ethylene and acrylic acid copolymer, 80 parts of polyvinyl alcohol, 60 parts of film-grade PLA, poly- hydroxyl
55 parts of fatty acid ester, 55 parts of triphenyl phosphite, 28 parts of plasticizer, 25 parts of lignin, 25 parts of vegetable colour.
Further, the Film grade polyethylene is film-grade LLDPE and film level high-density polyethylene
Mixing；The thermoplastic starch is farina；The plasticizer is ethylene glycol, polyethylene glycol；The vegetable colour is from can
Extract in the plant for extracting pigment, the plant containing extractable pigment is madder, indigo, spinach, sweet potato leaves, winter
Blue or green.
A kind of preparation method of Degradable environment-friendlyplastic plastic described above, comprises the steps of：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, stir 34min under the speed of 1350r/min, and mixing is uniformly
Miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1150r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 150 DEG C, the heating-up temperature of the second segment of screw rod is 170 DEG C, the 3rd section of screw rod of heating-up temperature is 190 DEG C, die head
Heating-up temperature is 215 DEG C；Film mechanical performance is checked after film forming, is carried out sealing, cut, packed, i.e., by specification after the assay was approved
Obtain Degradable environment-friendlyplastic plastic.
In sum, the plastic products produced of the present invention can auto-degradation, will not be to environment and broken
Bad soil texture, is a kind of real green plastic, with good flexibility, oil-proof composition and heat sealability, the plant of addition
Thing dyestuff not only has pigmentation, and also there is certain antibiotic property.Abundant raw material source, preparation method is simple, quick, cost
Cheap.
The preferred embodiment of invention is the foregoing is only, not in order to limit the present invention, all in spirit of the invention
Within principle, any modification, equivalent substitution and improvements that is made etc. should be included within the scope of the present invention.
Claims (8)
1. a kind of Degradable environment-friendlyplastic plastic, it is characterised in that be made up of the raw material of following weight portion：Film grade polyethylene 53～90
Part, 48～85 parts of microcrystalline cellulose, 48～85 parts of thermoplastic starch, 45～90 parts of ethylene and acrylic acid copolymer, polyvinyl alcohol
45～90 parts, 42～70 parts of film-grade PLA, 36～65 parts of polyhydroxyalkanoate, 36～65 parts of triphenyl phosphite, increase
20～30 parts of agent of modeling, 15～30 parts of lignin, 12～30 parts of vegetable colour.
2. a kind of Degradable environment-friendlyplastic plastic according to claim 1, it is characterised in that by the raw material system of following weight portion
Into：68 parts of Film grade polyethylene, 68 parts of microcrystalline cellulose, 65 parts of thermoplastic starch, 66 parts of ethylene and acrylic acid copolymer, poly- second
66 parts of enol, 56 parts of film-grade PLA, 50 parts of polyhydroxyalkanoate, 50 parts of triphenyl phosphite, 25 parts of plasticizer, wooden
Plain 22 parts, 22 parts of vegetable colour.
3. a kind of Degradable environment-friendlyplastic plastic according to claim 1, it is characterised in that by the raw material system of following weight portion
Into：60～75 parts of Film grade polyethylene, 60～75 parts of microcrystalline cellulose, 60～75 parts of thermoplastic starch, ethene and acrylic acid are altogether
55～80 parts of polymers, 55～80 parts of polyvinyl alcohol, 53～60 parts of film-grade PLA, 45～55 parts of polyhydroxyalkanoate, Asia
45～55 parts of triphenyl phosphate, 23～28 parts of plasticizer, 20～25 parts of lignin, 18～25 parts of vegetable colour.
4. a kind of Degradable environment-friendlyplastic plastic according to any one of claims 1 to 3, it is characterised in that the film-grade is gathered
Ethene is film-grade LLDPE, or film-grade LLDPE and Film grade low density polyethylene
Mixing, or film-grade LLDPE and the mixing of film level high-density polyethylene.
5. a kind of Degradable environment-friendlyplastic plastic according to claim 4, it is characterised in that：The thermoplastic starch forms sediment for corn
Any one in powder, farina, starch from sweet potato, tapioca.
6. a kind of Degradable environment-friendlyplastic plastic according to claim 5, it is characterised in that：The plasticizer is glycerine, second two
One or more mixing in alcohol, polyethylene glycol.
7. a kind of Degradable environment-friendlyplastic plastic according to claim 6, it is characterised in that：The vegetable colour is from extractable color
Extract in the plant of element, the plant containing extractable pigment is madder, purplish red bluegrass, butterflybush flower, Yellow Fructus Gardeniae, indigo
One or more in indigo plant, safflower, spinach, sweet potato leaves, pumpkin, Chinese ilex, cape jasmine, turmeric, red back of the body dish, red bluegrass, purple perilla
Plant.
8. the preparation method of a kind of Degradable environment-friendlyplastic plastic according to claim 7, it is characterised in that by following steps group
Into：
（1）By polyhydroxyalkanoate, triphenyl phosphite, plasticizer, lignin, Film grade polyethylene, ethene and acrylic acid
Copolymer and polyvinyl alcohol are sequentially added in high-speed mixer, under the speed of 1200～1400r/min stir 30～35min,
Mix uniformly miscible body；
（2）To step（1）Miscible body add microcrystalline cellulose, thermoplastic starch, film-grade PLA, vegetable colour, stirring
Uniformly, mixing speed is 1000～1200r/min, obtains premix；
（3）By step（2）Premix send into screw injection molding machine in carry out injection film forming, the heating temperature of the first paragraph of screw rod
Spend for 140～155 DEG C, the heating-up temperature of the second segment of screw rod is 155～175 DEG C, the 3rd section of screw rod of heating-up temperature is 175
～195 DEG C, the heating-up temperature of die head is 200～220 DEG C；Film mechanical performance is checked after film forming, is entered by specification after the assay was approved
Row is sealed, is cut, packing, and obtains final product Degradable environment-friendlyplastic plastic.
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| CN107383571A (en) * | 2017-06-26 | 2017-11-24 | 李春秀 | Environment-friendlyanti-crease anti-crease shrink package film |
| CN107778606A (en) * | 2017-11-10 | 2018-03-09 | 桐城市强峰包装有限公司 | A kind of high tenacity decomposable asymmetric choice net environmentally-friendly plastic packaging bag |
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| CN109293996A (en) * | 2018-09-05 | 2019-02-01 | 安徽新翔包装材料有限公司 | A kind of degradable environment protection paper-plastic bag and preparation method thereof |
| CN109942940A (en) * | 2019-03-22 | 2019-06-28 | 无锡纯宇环保制品有限公司 | A kind of food-grade environmental protection can natural degradation polybag |
| CN111748129A (en) * | 2019-03-28 | 2020-10-09 | 安庆市康明纳包装有限公司 | Biodegradable packaging bag |
| CN112662148A (en) * | 2020-12-28 | 2021-04-16 | 常熟市沈氏塑业有限公司 | Degradable plastic for blow-molded bottle and preparation method thereof |
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Application publication date: 20170315 |