CN101275310A - Production technology for polylactic acid anti-bacterial fiber having skin-core structure - Google Patents
Production technology for polylactic acid anti-bacterial fiber having skin-core structure Download PDFInfo
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- CN101275310A CN101275310A CNA200810024811XA CN200810024811A CN101275310A CN 101275310 A CN101275310 A CN 101275310A CN A200810024811X A CNA200810024811X A CN A200810024811XA CN 200810024811 A CN200810024811 A CN 200810024811A CN 101275310 A CN101275310 A CN 101275310A
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- skin
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- pla
- cortex
- polylactic acid
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Abstract
The invention relates to a production technology of a polylactic acid anti-bacterial fiber with core-skin structure, which is a manufacturing method using functional fused mass produced by double screw to produce PLA anti-bacterial fiber through composite box body and core-skin composite component, wherein, the PLA fused mass is a sandwich layer, whose core-skin proportion by weight is from 2:8-6:4; whose cortex material weight percentage prescription is: 75-85% of cortex PLA polyalcohol, 15-25% of antimicrobial powder, and 0.2-4% of resin acceptor; and whose sandwich layer material is 100% of polyalcohol. The composite spinning box body is adopted to produce by a composite spinning method. The invention uses conventional equipment, has simple technique, easy operations and low cost; and facilitates industrialization spread applications.
Description
Technical field
The present invention relates to functional chemical fibre manufacturing technology, be specially a kind of production technology, belong to chemical fiber field with polylactic acid anti-bacterial fiber of skin-core structure.
Background technology
At present, the kind of domestic polylactic acid anti-bacterial fiber and the mode of production thereof are seldom summed up to get up to comprise: the twin-screw section is spun and is produced anti-PLA bacterium fibre technology; The island composite algorithm is produced the polylactic acid anti-bacterial fiber technology; Antibacterial functions liquid facture is produced antibacterial polylactic acid fiber technology etc.Though these methods also can production performance polylactic acid anti-bacterial fiber preferably, all have weak point.Twin-screw method and island composite algorithm production procedure are long, complex procedures, and technique controlling difficulty is big, and the product physical and chemical performance is inhomogeneous.Problems such as functional liquid is handled rule and existed wastage of material big, and environmental pollution is serious.
Summary of the invention
At the deficiencies in the prior art, the technical problem that quasi-solution of the present invention is determined has provided a kind of manufacture method of new polylactic acid anti-bacterial fiber.
The objective of the invention is to design a kind of functional fiber with skin-core structure, the core-skin volume ratio is 2: 8～6: 4; The percentage by weight prescription of its cortex material is: cortex PLA (PLA) 75～85%, antimicrobial nano powder 15～25%, coupling agent 0.2～4%; Its core layer material is 100% PLA (PLA) polymer.
Technological process is as follows:
The object of the present invention is achieved like this:
1, makes cortex material: after by the prescription of described cortex material cortex polymer, antimicrobial nano powder and coupling agent evenly being mixed, under 180～230 ℃ of temperature, extrude through twin-screw and to obtain described cortex melt.
2, make the core-skin composite antibacterial fibre, the cortex melt with above-mentioned 1 step gained by described core-skin weight ratio, spins out the POY undrawn yarn with core-skin composite spinning silk machine.After overbalance, carry out the draw false twisting distortion and make the low PLA of bullet of DTY fiber.
Antimicrobial nano powder diameter of the present invention should be the following fine particle of 35nm.
PLA of the present invention (PLA) anti-bacterial fibre is owing to adopted core-sheath composite structure, in fact its core-skin layer is equivalent to section and spins functional fibre, and its sandwich layer is because of being identical with the most component of cortex, thereby can solve qualitative compatibling problem, lamination can not occur.Simultaneously, make, can also solve the not wide old trouble of other composite spinning method technology fine setting property by the multiple unit tube structural reform.
Progressive effect of the present invention is used conventional equipment, and technology is simple, and processing ease is with low cost, is convenient to industrialization promotion and uses.
The specific embodiment
Below provide 1 specific embodiment of the present invention:
Get 80 parts of dried PLA sections (weight, down together); Average grain diameter is 17 parts of 35nm and surface treated silver nitrate anti-bacterial powder, and 3 parts of coupling agents after abundant mixing, are extruded through twin-screw under 225 ℃, and granulation produces the cortex melt; Fiber core-skin weight ratio by 3: 7 spins out undrawn yarn (speed 2800M/MIN) with core-skin composite spinning silk machine; , through the good POY of overbalance, stretched distortion obtains a kind of antibiotic PLA long filament.
Claims (3)
1, a kind of production technology with polylactic acid anti-bacterial fiber of skin-core structure is characterized in that A is the PLA melt, and B adopts antimicrobial nano powder 15～25% by twin-screw, and coupling agent 0.2～4% is extruded the melt made from the terylene blend.
2, technology as claimed in claim 1 is characterized in that A is a sandwich layer, and B is a cortex, and core-skin weight percentages prescription is 2: 8～6: 4.
3, technology as claimed in claim 1 is characterized in that cortex percentage by weight prescription is: cortex terylene 75～85%, antimicrobial nano powder 15～25%, coupling agent 0.2～4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810024811XA CN101275310A (en) | 2008-05-07 | 2008-05-07 | Production technology for polylactic acid anti-bacterial fiber having skin-core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810024811XA CN101275310A (en) | 2008-05-07 | 2008-05-07 | Production technology for polylactic acid anti-bacterial fiber having skin-core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101275310A true CN101275310A (en) | 2008-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810024811XA Pending CN101275310A (en) | 2008-05-07 | 2008-05-07 | Production technology for polylactic acid anti-bacterial fiber having skin-core structure |
Country Status (1)
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| CN (1) | CN101275310A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212896A (en) * | 2011-05-27 | 2011-10-12 | 东华大学 | High-efficiency antibacterial mildew-proof PLA (poly lactic acid) fiber with skin-core structure and preparation method thereof |
| CN105200543A (en) * | 2015-10-29 | 2015-12-30 | 江南大学 | Preparation method of polylactic acid composite fiber with hydrolysis resistance |
| CN107227507A (en) * | 2017-05-19 | 2017-10-03 | 中国纺织科学研究院 | Polylactide and poly (glycolide-lactide) composite fibre, its preparation method, purposes and operation suture thread |
-
2008
- 2008-05-07 CN CNA200810024811XA patent/CN101275310A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212896A (en) * | 2011-05-27 | 2011-10-12 | 东华大学 | High-efficiency antibacterial mildew-proof PLA (poly lactic acid) fiber with skin-core structure and preparation method thereof |
| CN105200543A (en) * | 2015-10-29 | 2015-12-30 | 江南大学 | Preparation method of polylactic acid composite fiber with hydrolysis resistance |
| CN107227507A (en) * | 2017-05-19 | 2017-10-03 | 中国纺织科学研究院 | Polylactide and poly (glycolide-lactide) composite fibre, its preparation method, purposes and operation suture thread |
| CN107227507B (en) * | 2017-05-19 | 2019-05-31 | 中国纺织科学研究院有限公司 | Polylactide and poly (glycolide-lactide) composite fibre, preparation method, purposes and operation suture thread |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081001 |