CN1267480C - Double degradation plastic film and production method thereof - Google Patents
Double degradation plastic film and production method thereof Download PDFInfo
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- CN1267480C CN1267480C CN 02150992 CN02150992A CN1267480C CN 1267480 C CN1267480 C CN 1267480C CN 02150992 CN02150992 CN 02150992 CN 02150992 A CN02150992 A CN 02150992A CN 1267480 C CN1267480 C CN 1267480C
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- plastic film
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Abstract
The present invention relates to a double degradation plastic film and a production method thereof, particularly to a plastic film with a degradation function, and a production method of the plastic film, which belongs to the technical field of plastics. The plastic film solves the problems of no degradation or low degradation speed, etc. of the existing plastic. The double degradation plastic film is prepared from the following raw materials for production: polyethylene, degradation starch, a photodegradation additive, glycerol and an ethyl propylene copolymer, wherein the photodegradation additive can be one of a metal salt of N, N-dialkyl dithiocarbamic acid, titanium dioxide and calcium oxide. The double degradation plastic film is degraded by a method that light degradation is combined with biodegradation and has the characteristics of less degradation time, low product cost, simple preparation process, etc.; the double degradation plastic film can be produced into various packing bags, and the double degradation plastic film has high practical value.
Description
Technical field
The invention belongs to the plastics technology field, particularly a kind of plastics film and production method thereof with degradation function.
Background technology
Plastics have been penetrated into the every field of industry, agricultural, national defence and daily life as a kind of material, have brought very big convenience for people's life.At present, in the annual plastics of being produced, have 30% to be used for packing.The plastics film that is used to pack is after disposable use, and major part becomes solid waste.The traditional method of disposal of plastic waste is to recycle and burning disposal.Since plastics film in light weight, volume is big, quantity is many, general being difficult to recycled.And adopt the method for burning can produce a large amount of toxic gases, cause topsoil.Therefore, now seriously polluted existent environment of people by plastic refuse caused " white pollution ", public hazards become international.
For this reason, people get down to the research degradative plastics, have done a lot of work.The achievement of some research has also been applied for patent.As application number is that 981020267 disclosed " plastics bags free from environmental pollution and preparation method thereof " and application number are 001103237 disclosed " controllable biologically degraded edible mushrooms plastics-production technology " or the like, all is at how making plastics degrade, shorten residual period as early as possible and unfolded.
In existing research to degradative plastics, it is a kind of than advanced person and practical solution adopting biodegradation technique." biodegradable plastic and the manufacture method thereof " that provided as Chinese patent 931148219 is exactly a typical example.It is to add modified starch etc. in plastics, and good combination by synthesising macromolecule copolymer and modified starch and processibility achieve the goal.Although the degradative plastics that this method is made can be degraded, its contents of starch is higher, reaches 20～80%.Like this, improved the cost of product greatly, and increased the difficulty of blown film processing, when particularly needing to process the plastics film of thinner thickness.In addition, what is more important adopts simple biological degradation, and its degradation time is longer, is unfavorable for plastic refuse is handled fast and effectively, and has shortened the work-ing life of refuse landfill.
Summary of the invention
The objective of the invention is provides a kind of double degradation plastic film and production method thereof in order to address the above problem, and makes it have that degradation speed is fast, product cost is low, the characteristics of production technique advantages of simple.
The objective of the invention is to realize by following technical proposal: the raw materials for production of this double degradation plastic film comprise polyethylene, degraded starch and photodegradation additives, above-mentioned photodegradation additives can be N, the metal-salt of N-dialkyldithiocarbamacompositions, in the titanium dioxide any, the weight proportion of each raw material is:
Polyethylene 65～92%
Degraded starch 5～33%
Photodegradation additives 0.1～3%
Above-mentioned raw materials for production also comprise glycerine and ethylene-propylene copolymers.Here, glycerine is lubricate, and ethylene-propylene copolymers then can improve the plastic content of product.
In above-mentioned double degradation plastic film, the preferred weight proportion of each raw material is:
Polyethylene 70～90%
Degraded starch 6～25%
Photodegradation additives 0.1～1%
Glycerine 2～15%
Ethylene-propylene copolymers 0.5～2%
This double degradation plastic film is that the method that adopts photodegradation and biological degradation to combine realizes degrading: at first plastics film absorbs sunlight within a certain period of time, and the beginning photodegradation becomes powder shape; Then, plastics film buries as utilizing all right biodegrade of degraded starch after underground, is decomposed fully at last.
The production method of above-mentioned double degradation plastic film follows these steps to carry out:
A, each raw material is taken by weighing by its proportioning;
B, each raw material mix, and stir;
C, be placed in the dryer and dry, bake out temperature is controlled in 30～60 ℃ of scopes;
D, the processing of usefulness inflation film manufacturing machine blown film, the blown film temperature is between 150～230 ℃.
The double degradation plastic film of making like this is not only sturdy and durable, and can prevent white pollution, is significant aspect environmental protection.This double degradation plastic film can be made various products, as food bag, refuse bag, garment bag, shopping bag and packing of product bag or the like.
The advantage of double degradation plastic film provided by the invention is:
1, owing to adopted the mode of two degradeds, makes the degradation time of plastics short, prolonged the work-ing life of landfill yard;
2, the starch content in this biodegradable plastic is less, has reduced the cost of product, makes product have the higher market competitiveness, helps enforcement of the present invention;
3, the production technique of this biodegradable plastic is simple, and processing ease has higher utility.
Embodiment
Press the column weight amount and take by weighing each raw material: 37 kilograms of polyethylene, 8 kilograms of degraded starchs, 0.15 kilogram of photodegradation additives, 4 kilograms of glycerine, 0.6 kilogram of ethylene-propylene copolymers.Here degraded starch can be main making with the corn.Because starch can be decomposed by Institute of Micro-biology in soil, so can biodegrade.In the present embodiment, photodegradation additives adopts N, N-dialkyldithiocarbamacompositions iron.
With after the raw material stirring, it is dry to put into dryer then.The temperature of dryer is controlled at about 50 ℃.Raw material after the oven dry is by the inflation film manufacturing machine blown film.The temperature of blown film is controlled at about 180 ℃.
At last, the plastics film of inflation film manufacturing machine gained can be made various packing bags.
Passed through the detection at national authority mechanism-plastic products quality supervision and inspection station, Shanghai City according to the degradable film bag of present embodiment gained.Detected result shows, the reserved elongation at break of this degradable film bag after photodegradation is vertical 29%, horizontal 12%, all meets≤30% technical requirements, shows good degradation effect.
Claims (4)
1, a kind of double degradation plastic film, the raw materials for production that it is characterized in that it comprise polyethylene, degraded starch and photodegradation additives, described photodegradation additives is N, any of the metal-salt of N-dialkyldithiocarbamacompositions, titanium dioxide, and the weight proportion of described each raw material is:
Polyethylene 65～92%
Degraded starch 5～33%
Photodegradation additives 0.1～3%.
2, double degradation plastic film according to claim 1 is characterized in that described photodegradation additives is N, N-dialkyldithiocarbamacompositions iron.
3, double degradation plastic film according to claim 1 is characterized in that described raw materials for production also comprise glycerine and ethylene-propylene copolymers.
4, double degradation plastic film according to claim 3 is characterized in that the preferred weight proportion of described each raw material is:
Polyethylene 70～90%
Degraded starch 6～25%
Photodegradation additives 0.1～1%
Glycerine 2～15%
Ethylene-propylene copolymers 0.5～2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02150992 CN1267480C (en) | 2002-11-28 | 2002-11-28 | Double degradation plastic film and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02150992 CN1267480C (en) | 2002-11-28 | 2002-11-28 | Double degradation plastic film and production method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN1418906A CN1418906A (en) | 2003-05-21 |
| CN1267480C true CN1267480C (en) | 2006-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02150992 Expired - Fee Related CN1267480C (en) | 2002-11-28 | 2002-11-28 | Double degradation plastic film and production method thereof |
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| Country | Link |
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| CN (1) | CN1267480C (en) |
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| CN101503528A (en) * | 2009-02-19 | 2009-08-12 | 林宏和 | Bottle blowing moulding environment friendly drinking vessel and production process |
| CN101851355B (en) * | 2010-06-23 | 2012-05-09 | 孙彦升 | Degradable starch-based plastic masterbatch and preparation method thereof |
| CN102504347B (en) * | 2011-11-16 | 2014-12-10 | 和昌（广西）化工有限公司 | Degradable polyolefin masterbatch and production method thereof |
| CN102634094A (en) * | 2012-03-31 | 2012-08-15 | 许昌学院 | Optical and thermal-oxidative dual-degradation plastic thin film and manufacturing method thereof |
| CN103160012B (en) * | 2013-04-01 | 2015-09-23 | 天津市金盛昱塑料制品有限公司 | A kind of oxygen barrier and degredation plastic film |
| CN103205045A (en) * | 2013-04-01 | 2013-07-17 | 天津超平新材料科技有限公司 | Preparation method for oxygen separating degradable plastic thin film |
| CN103254490B (en) * | 2013-05-30 | 2015-09-09 | 河北麦森钛白粉有限公司 | A kind of preparation technology of two degraded agricultural mulching |
| CN103289171B (en) * | 2013-06-24 | 2015-04-15 | 苏州新区佳合塑胶有限公司 | Preparation method of high-strength easy-degradation master batch for plastic bags |
| CN105037825A (en) * | 2015-07-24 | 2015-11-11 | 南通慧源塑胶有限公司 | Environment-friendly double-degradable plastic |
| CN105907051A (en) * | 2016-05-24 | 2016-08-31 | 太仓市兴益披覆有限公司 | Rapid-degradation plastic |
| CN107297924A (en) * | 2017-07-25 | 2017-10-27 | 合肥达户电线电缆科技有限公司 | A kind of preparation method of Environment-friendlyplastic plastic bag |
| CN107522933B (en) * | 2017-09-25 | 2020-08-28 | 四川妙顺环保科技有限公司 | Bio-based fully-degradable plastic garbage bag for garbage classification and preparation method thereof |
| CN107629304B (en) * | 2017-09-25 | 2020-03-27 | 四川妙顺环保科技有限公司 | Bio-based ecological mulching film and preparation method thereof |
| CN108976549A (en) * | 2018-06-25 | 2018-12-11 | 广东格瑞新材料股份有限公司 | A kind of degradable PE composition and preparation method thereof |
| CN109320833A (en) * | 2018-11-02 | 2019-02-12 | 廖荣金 | A kind of degradable mulch and preparation method |
| CN109354747B (en) * | 2018-11-02 | 2022-04-29 | 温州银润包装有限公司 | Degradable film and preparation method thereof |
| CN109485973A (en) * | 2018-11-14 | 2019-03-19 | 长沙浩然医疗科技有限公司 | A kind of degradable films and preparation method thereof |
| TR201901465A2 (en) * | 2019-01-31 | 2020-08-21 | Skalanova Etiket Ve Tekstil Aksesuarlari San Ve Tic Ltd Sti | BIO FABRIC |
| CN109880217A (en) * | 2019-03-13 | 2019-06-14 | 广州思薇伦特美容生物科技有限公司 | A kind of green biodegradable plastics film and its processing technology |
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| CN1418906A (en) | 2003-05-21 |
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Owner name: XINGGUANG PACKING PLANT, YUHUAN COUNTY; RIXIN PAC Free format text: FORMER OWNER: XINGGUANG PACKING PLANT, YUHUAN COUNTY Effective date: 20060421 |
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Effective date of registration: 20060421 Address after: 317607 Zhejiang Township in Yuhuan County Province dragon Qiu Mei Ao Village Co-patentee after: Yuhuan County letter letter Packing Factory Patentee after: Xingguang Hwanwei Film Factory, Yuhuan County Address before: 317600, Yuhuan County, Zhejiang Province Town Industrial Zone Patentee before: Xingguang Hwanwei Film Factory, Yuhuan County |
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