CN101508791B - Process for preparing biodegradable plastic film - Google Patents
Process for preparing biodegradable plastic film Download PDFInfo
- Publication number
- CN101508791B CN101508791B CN200910074027A CN200910074027A CN101508791B CN 101508791 B CN101508791 B CN 101508791B CN 200910074027 A CN200910074027 A CN 200910074027A CN 200910074027 A CN200910074027 A CN 200910074027A CN 101508791 B CN101508791 B CN 101508791B
- Authority
- CN
- China
- Prior art keywords
- zones
- film
- plastic film
- biodegradable plastic
- ecoflex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
- B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29C2948/92704—Temperature
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- 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
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention pertains to a production method of plastic film, in particular to a production method of biodegradable plastic film, and provides a production method of biodegradable plastic film by utilizing Ecoflex and PHBV. In the method, 5 to 50 percent PHBV poly-hydroxy-butyrate-valerate copolyester and 50 to 95 percent Ecoflex random aliphatic and aromatic copolyester are evenly mixed and then CaCo3 accounting for 5 percent of the total weight of the above mixture is added. The invention has the following beneficial effects: the process is simple and the operation is easy; the film produced can be totally decomposed into water, CO2 and organic substances under the action of soil microorganism; with no pollution, the film can be widely applied to agricultural film, packing bag (food package and industrial package), etc. Therefore, the film is a green environment-friendly product.
Description
Technical field
The invention belongs to production method of plastic film, be specifically related to a kind of working method of biodegradable plastic film.
Background technology
Degradative plastics is just becoming the research and development focus of attracting attention the world today as high-tech product and environmentfriendly products; Its development has not only enlarged the function of plastics; And alleviated environment contradiction to a certain extent; Exhausted day by day petroleum resources are one replenish, so the research and development of degradative plastics and apply the requirement that has adapted to human kind sustainable development.
Biodegradable plastic is meant the effect of one type of mikrobe that is existed by nature such as bacterium, mould (fungi) and algae and causes the plastics of degraded.The raw material of present biodegradable plastic is also many, comprising the aliphatics aromatic series atactic polyester (Ecoflex) of German BASF AG manufacturing and the polyhydroxybutyrate valeric acid copolyesters (PHBV) of Donghua University's development.Aliphatics aromatic series atactic polyester (Ecoflex) phthalic acid, lipid acid and 1, the 4-butyleneglycol is synthetic.Polyhydroxybutyrate valeric acid copolyesters (PHBV) is a kind of biopolymer polyester; It has excellent biological compatibility, biological degradation and Bioabsorbable; Yet because the shortcoming of material itself; Slow like crystallization rate, percent crystallinity is high, poor stability, elongation at break is low and forming process difficulty etc., has greatly limited the application of PHBV.Above-mentioned two kinds of raw materials have biodegradability preferably, but are to use its process method of producing plastics film to be still waiting research.
Summary of the invention
The invention provides a kind of working method of biodegradable plastic film.
The present invention adopts following technical scheme to realize:
The working method of biodegradable plastic film mixes 5～50%PHBV polyhydroxybutyrate valeric acid copolyesters and 50～95%Ecoflex aliphatics aromatic series atactic polyester, adds the CaCO that accounts for said mixture gross weight 5% again
3
The working method of biodegradable plastic film is characterized in that PHBV polyhydroxybutyrate valeric acid copolyesters, Ecoflex aliphatics aromatic series atactic polyester, CaCO
3Thorough mixing is even in proportion; Extrusion plasticizing adopts lower blowing method, adds blow moulding machine blowing film forming; Technological temperature: machine barrel: 135～150 ℃ of charging zones, 150～160 ℃ of plasticizing zones, 160～170 ℃ of homogenization zones, auxiliary region: 150～165 ℃ of mould linking neck, 145～165 ℃ of forming moulds; Blow-up ratio: 2～3.
The working method of biodegradable plastic film is characterized in that its technological temperature: machine barrel: 135 ℃ of charging zones, 150 ℃ of plasticizing zones, 160 ℃ of homogenization zones; Auxiliary region: 150 ℃ of mould linking neck, 145 ℃ of forming moulds.
The plastics film of gained of the present invention is tested through controlled aerobic composting, and in the time of 130 days, the film rate of decomposition reaches 65%, reaches national degradative plastics standard GB/T20197-2006 (>=60%) requirement, and is as shown in table 1 below.
Table 1
The mechanics performance determining of the plastics film of gained of the present invention is as shown in table 2 below, has satisfied the relevant criterion requirement of plastics film mechanical property.
Table 2
The present invention has following beneficial effect: its technology is simple, easy handling; The film of being produced is under the effect of soil microorganisms; Can resolve into water, carbonic acid gas and organism fully; Pollution-free, can be widely used in agricultural mulching, packing bag (food product pack, industrial packaging) etc., be a kind of environmentfriendly products of green.
Embodiment
Embodiment 1: 50%PHBV polyhydroxybutyrate valeric acid copolyesters and 50%Ecoflex aliphatics aromatic series atactic polyester are mixed, add the CaCO that accounts for said mixture gross weight 5% again
3, adopt lower blowing method, add blow moulding machine blowing film forming, the minimum 0.02mm that reaches of film thickness.
Its extrusion moulding production is in proper order: film forming is produced materials → uniform mixing → extrusion plasticizing → blowing film forming bubble → cooling and shaping → rolling.
Device parameter: the extrusion screw rod diameter is 45mm, and length-to-diameter ratio is 30: 1, and compression ratio is 3, and screw head is provided with barrier screen, port mould diameter Φ 160mm, mouthful die clearance 1～1.2mm, forcing machine motor speed: 700～800r/min.
Technological temperature: machine barrel: 135 ℃ of charging zones, 150 ℃ of plasticizing zones, 160 ℃ of homogenization zones; Auxiliary region: 150 ℃ of mould linking neck, 145 ℃ of forming moulds.
Blow-up ratio: 2.5.
Embodiment 2: 5%PHBV polyhydroxybutyrate valeric acid copolyesters and 95%Ecoflex aliphatics aromatic series atactic polyester are mixed, add the CaCO that accounts for said mixture gross weight 5% again
3, technological temperature: machine barrel: 150 ℃ of charging zones, 160 ℃ of plasticizing zones, 170 ℃ of homogenization zones; Auxiliary region: 165 ℃ of mould linking neck, 165 ℃ of forming moulds, blow-up ratio: 3; All the other processing condition are with embodiment 1.
Embodiment 3: 20%PHBV polyhydroxybutyrate valeric acid copolyesters and 80%Ecoflex aliphatics aromatic series atactic polyester are mixed, add the CaCO that accounts for said mixture gross weight 5% again
3, technological temperature: machine barrel: 135 ℃ of charging zones, 155 ℃ of plasticizing zones, 165 ℃ of homogenization zones; Auxiliary region: 160 ℃ of mould linking neck, 165 ℃ of forming moulds, blow-up ratio: 2; All the other processing condition are with embodiment 1.
Embodiment 4: 35%PHBV polyhydroxybutyrate valeric acid copolyesters and 65%Ecoflex aliphatics aromatic series atactic polyester are mixed, add the CaCO that accounts for said mixture gross weight 5% again
3, technological temperature: machine barrel: 140 ℃ of charging zones, 150 ℃ of plasticizing zones, 165 ℃ of homogenization zones; Auxiliary region: 155 ℃ of mould linking neck, 160 ℃ of forming moulds, blow-up ratio 2.4; All the other processing condition are with embodiment 1.
Embodiment 5: 45%PHBV polyhydroxybutyrate valeric acid copolyesters and 55%Ecoflex aliphatics aromatic series atactic polyester are mixed, add the CaCO that accounts for said mixture gross weight 5% again
3, technological temperature: machine barrel: 145 ℃ of charging zones, 160 ℃ of plasticizing zones, 170 ℃ of homogenization zones; Auxiliary region: 160 ℃ of mould linking neck, 165 ℃ of forming moulds, blow-up ratio 2.5; All the other processing condition are with embodiment 1.
Claims (2)
1. the working method of a biodegradable plastic film is characterized in that 5～50%PHBV polyhydroxybutyrate valeric acid copolyesters and 50～95%Ecoflex aliphatics aromatic series atactic polyester are mixed, and adds the CaCO that accounts for said mixture gross weight 5% again
3, with PHBV polyhydroxybutyrate valeric acid copolyesters, Ecoflex aliphatics aromatic series atactic polyester, CaCO
3Thorough mixing is even in proportion; Extrusion plasticizing adopts lower blowing method, adds blow moulding machine blowing film forming; Technological temperature: machine barrel: 135～150 ℃ of charging zones, 150～160 ℃ of plasticizing zones, 160～170 ℃ of homogenization zones, auxiliary region: 150～165 ℃ of mould linking neck, 145～165 ℃ of forming moulds; Blow-up ratio: 2～3.
2. the working method of biodegradable plastic film according to claim 1 is characterized in that its technological temperature: machine barrel: 135 ℃ of charging zones, 150 ℃ of plasticizing zones, 160 ℃ of homogenization zones; Auxiliary region: 150 ℃ of mould linking neck, 145 ℃ of forming moulds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074027A CN101508791B (en) | 2009-03-24 | 2009-03-24 | Process for preparing biodegradable plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074027A CN101508791B (en) | 2009-03-24 | 2009-03-24 | Process for preparing biodegradable plastic film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101508791A CN101508791A (en) | 2009-08-19 |
| CN101508791B true CN101508791B (en) | 2012-10-03 |
Family
ID=41001329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910074027A Expired - Fee Related CN101508791B (en) | 2009-03-24 | 2009-03-24 | Process for preparing biodegradable plastic film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101508791B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2551301A1 (en) * | 2011-07-29 | 2013-01-30 | Basf Se | Biodegradable polyester film |
| US9096758B2 (en) | 2011-07-29 | 2015-08-04 | Basf Se | Biodegradable polyester foil |
| US10683399B2 (en) * | 2018-06-26 | 2020-06-16 | Intrinsic Advanced Materials, LLC | Biodegradable textiles, masterbatches, and method of making biodegradable fibers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898325A (en) * | 2003-12-22 | 2007-01-17 | 伊斯曼化学公司 | Polymer blends with improved rheology and improved unnotched impact strength |
| CN1902267A (en) * | 2003-12-18 | 2007-01-24 | 伊斯曼化学公司 | Process for calendering of polyesters |
| CN1948374A (en) * | 2006-09-28 | 2007-04-18 | 浙江华发生态科技有限公司 | Biomass full degradable material and its preparation technology |
-
2009
- 2009-03-24 CN CN200910074027A patent/CN101508791B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1902267A (en) * | 2003-12-18 | 2007-01-24 | 伊斯曼化学公司 | Process for calendering of polyesters |
| CN1898325A (en) * | 2003-12-22 | 2007-01-17 | 伊斯曼化学公司 | Polymer blends with improved rheology and improved unnotched impact strength |
| CN1948374A (en) * | 2006-09-28 | 2007-04-18 | 浙江华发生态科技有限公司 | Biomass full degradable material and its preparation technology |
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| Publication number | Publication date |
|---|---|
| CN101508791A (en) | 2009-08-19 |
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