CN102294808A - Injection molding process for high polymer material polylactic acid - Google Patents
Injection molding process for high polymer material polylactic acid Download PDFInfo
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- CN102294808A CN102294808A CN2010102105917A CN201010210591A CN102294808A CN 102294808 A CN102294808 A CN 102294808A CN 2010102105917 A CN2010102105917 A CN 2010102105917A CN 201010210591 A CN201010210591 A CN 201010210591A CN 102294808 A CN102294808 A CN 102294808A
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- polylactic acid
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Abstract
The invention discloses an injection molding process for high polymer material polylactic acid. The parameters of an injection molding machine are set as follows: the material barrel temperature is 172-178 DEG C at a first section, 177-183 DEG C at a second section and 167-173 DEG C at a third section; the cooling time is 7-9 seconds; the injection time is 1-3 seconds; the injection pressure is 85-95 bar; the injection speed is 15-20 centimeters/second (the calculated value of the moving speed of a screw rod during injection); the material contraction rate is 0.8-1.0 percent; and the demolding gradient is 30-34 points. The process is simple, the cost is low relatively, and the localization of human body implanted absorbable medical appliances become possible.
Description
Technical field
The present invention relates to a kind of macromolecular material PLA jetting formation process.
Background technology
At present, domestic also do not have the achievement in research of poly-lactic acid material jetting formation process to deliver, growing along with society, Application of Biomaterial is also progressively popularized, PLA is as degradable biomaterial, its heat endurance extreme difference, flowability is also relatively poor, and its jetting formation process is quite harsh, therefore poly-lactic acid material is applied to the human body implanted medical device and also can't produces at home, present implant into body can absorb medicine equipment and mainly rely on from American-European import, because the technical monopoly of American-European countries, so import medical instrument costs an arm and a leg.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of macromolecular material PLA jetting formation process, this technology is simple, cost is cheap relatively, and implant for human body that the production domesticization can absorb medicine equipment provides may.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of macromolecular material PLA jetting formation process, the Jet forming machine parameter is set as follows: barrel temperature: first section 172～178 ℃, second section 177～183 ℃, the 3rd section 167～173 ℃; Cool time: 7～9 seconds; Inject time: 1～3 second; Injection pressure: 85～95bar; Injection speed: 15～20cm/s (calculated value of screw rod translational speed when injection); Material shrinkage factor: 0.8～1.0%; Draw taper: 30～34 minutes.
The invention has the beneficial effects as follows: this technology is simple, can realize large-scale production, and the absorbed medicine equipment price of utilizing the present invention to produce in addition will descend about 30% than similar import medical instrument.Therefore, the present invention has crucial medical research and clinical value, be to reduce the medical expense of extensive patients, for the healthy happiness of extensive patients has social effect widely.
The specific embodiment
Embodiment 1: a kind of macromolecular material PLA jetting formation process, and the Jet forming machine parameter is set as follows: barrel temperature: first section 175 ℃, second section 180 ℃, the 3rd section 170 ℃; Cool time: 8 seconds; Inject time: 2 seconds; Injection pressure: 90bar; Injection speed: 17.5cm/s (calculated value of screw rod translational speed when injection); Material shrinkage factor: 0.9%; Draw taper: 32 minutes.
Embodiment 2: a kind of macromolecular material PLA jetting formation process, and the Jet forming machine parameter is set as follows: barrel temperature: first section 172 ℃, second section 177 ℃, the 3rd section 167 ℃; Cool time: 7 seconds; Inject time: 1 second; Injection pressure: 85bar; Injection speed: 15cm/s (calculated value of screw rod translational speed when injection); Material shrinkage factor: 0.8%; Draw taper: 30 minutes.
Embodiment 3: a kind of macromolecular material PLA jetting formation process, and the Jet forming machine parameter is set as follows: barrel temperature: first section 178 ℃, second section 183 ℃, the 3rd section 173 ℃; Cool time: 9 seconds; Inject time: 3 seconds; Injection pressure: 95bar; Injection speed: 20cm/s (calculated value of screw rod translational speed when injection); Material shrinkage factor: 1.0%; Draw taper: 34 minutes.
Claims (1)
1. macromolecular material PLA jetting formation process, it is characterized in that: the Jet forming machine parameter is set as follows:
Barrel temperature: first section 172～178 ℃, second section 177～183 ℃, the 3rd section 167～173 ℃;
Cool time: 7～9 seconds;
Inject time: 1～3 second;
Injection pressure: 85～95bar;
Injection speed: 15～20cm/s;
Material shrinkage factor: 0.8～1.0%;
Draw taper: 30～34 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102105917A CN102294808A (en) | 2010-06-24 | 2010-06-24 | Injection molding process for high polymer material polylactic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102105917A CN102294808A (en) | 2010-06-24 | 2010-06-24 | Injection molding process for high polymer material polylactic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102294808A true CN102294808A (en) | 2011-12-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102105917A Pending CN102294808A (en) | 2010-06-24 | 2010-06-24 | Injection molding process for high polymer material polylactic acid |
Country Status (1)
| Country | Link |
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| CN (1) | CN102294808A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139516A (en) * | 2014-06-30 | 2014-11-12 | 杨青芳 | Molding processing method of micro absorbable bone nail or plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030038405A1 (en) * | 2001-08-20 | 2003-02-27 | Bopp Richard C. | Method for producing semicrystalline polylactic acid articles |
| CN101077605A (en) * | 2006-05-26 | 2007-11-28 | 靳学斌 | Molding process for using injection moulding to make plastics directly encompass metallic products |
| CN101439575A (en) * | 2008-12-26 | 2009-05-27 | 北京东明兴业科技有限公司 | Injection molding process of thin wall plastic products |
| CN101554763A (en) * | 2008-04-10 | 2009-10-14 | 鸿福鑫有限公司 | Polylactic acid forming body and making method thereof |
-
2010
- 2010-06-24 CN CN2010102105917A patent/CN102294808A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030038405A1 (en) * | 2001-08-20 | 2003-02-27 | Bopp Richard C. | Method for producing semicrystalline polylactic acid articles |
| CN101077605A (en) * | 2006-05-26 | 2007-11-28 | 靳学斌 | Molding process for using injection moulding to make plastics directly encompass metallic products |
| CN101554763A (en) * | 2008-04-10 | 2009-10-14 | 鸿福鑫有限公司 | Polylactic acid forming body and making method thereof |
| CN101439575A (en) * | 2008-12-26 | 2009-05-27 | 北京东明兴业科技有限公司 | Injection molding process of thin wall plastic products |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139516A (en) * | 2014-06-30 | 2014-11-12 | 杨青芳 | Molding processing method of micro absorbable bone nail or plate |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111228 |