CN1065497A - The manufacture method of polypropylene strength fibre - Google Patents
The manufacture method of polypropylene strength fibre Download PDFInfo
- Publication number
- CN1065497A CN1065497A CN 91101819 CN91101819A CN1065497A CN 1065497 A CN1065497 A CN 1065497A CN 91101819 CN91101819 CN 91101819 CN 91101819 A CN91101819 A CN 91101819A CN 1065497 A CN1065497 A CN 1065497A
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- Prior art keywords
- hot
- manufacture method
- heated
- temperature
- tow
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 9
- 239000000835 fiber Substances 0.000 title claims abstract description 9
- -1 polypropylene Polymers 0.000 title claims abstract description 9
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 9
- 238000009987 spinning Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 5
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 2
- 208000011580 syndromic disease Diseases 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 1
- 241001589086 Bellapiscis medius Species 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
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- Artificial Filaments (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The present invention is the manufacture method of a kind of brute force greater than the polypropylene strength fibre of 70CN/tex (8g/d).It is characterized in that adopting melt flow index MFI=5～40, the acrylic resin of molecular weight distributing index MWD≤7, spin speed spinning moulding with 400～1600 meters/minute, on spindle formula draw twister, carry out two-stage drawing-off and twisting then, making the multifilament fiber number is the high-strength polypropylene filament of 400～1600 dtexs, compare with process routes such as low speed spinning, water-bath cooling, seven rollers, the drawing-offs of hot case short fiber formula with multistage drafting technology, can save equipment investment, reduce production costs.
Description
The present invention is that a kind of fracture strength is greater than 70CN/tex(8g/d) the manufacture method of polypropylene strength fibre.
The manufacture method of existing multiple polypropylene strength fibre discloses.But the polypropylene fibre silk intensity that makes with those methods is mostly at 70CN/tex(8g/d) below, though there are some powerful higher, that petty processed complex, flow process are long, device efficiency is low, investment is big, petty to the ingredient requirement harshness.
The present invention is that a kind of melt flow index MFI that uses is 5-40, is preferably 8-26, and molecular weight distributing index MWD≤7 are preferably the acrylic resin below 4, with the method for the high-strength polypropylene filament of high production speed (spinning 400 meters/minute of speed) production.
Fig. 1 is a spinning line of the present invention, and Fig. 2 is a draft process flow process of the present invention.
Number in the figure 1 is a spinnerets, and 2 is air cooling equipment, and 3 is oiling device, and 4 is coiler device, 5 for feeding roll dies, and 6 is first group of drawing-off warm-up mill, and 7 involve the roller partial feeding roller of holding concurrently for first order drawing-off, 8 is the heating ingot of secondary drawing-off, 9 the rollers that involve for the secondary drawing-off, and 10 for adding twist spindles.
Main points of the present invention are set forth. One of main points of the present invention, be the cooling quench starting point from spinneret 15-45cm place, be preferably in the 25-35cm place; The cooling air temperature is controlled at below 20 ℃, is preferably below 15 ℃.
Two of main points of the present invention are should control the crystallization of the tow that is heated in order to avoid influence the drawing-off performance before the secondary drawing-off takes place.Concrete operations are: (one) be heated when first order drawing-off actual temperature of tow is controlled at 25～95 ℃, is preferably 50～75 ℃; (2) the feeding roller before the secondary drawing-off is preferably normal temperature, if can not satisfy (the corresponding raising of heating-up temperature palpus at this moment under the situation of (not enough) as hot plate length in the tow time of staying on the secondary drawing-off heater, decide on heated length and hot stickyization of tow degree) adopt the heating of feeding roller, its heating-up temperature must be controlled at below the hot plate temperature.
Three of main points of the present invention, be make the secondary drawing-off that enough heated lengths be arranged (as adopting the heating of hot ingot, then hot ingot length is 50～60cm, and promptly heated length is 100～120cm), and the HEAT SETTING under drawing-off and the same temperature is finished simultaneously.
Enforcement of the present invention provides by following example:
Embodiment 1
Melt flow index MFI=8, the spinning under 280 ℃ of conditions of spinning melt temperature of the acrylic resin of molecular weight distributing index MWD=5 is through 90 holes, the spinnerets of aperture φ=0.5mm extrudes.Beginning to blow a cold wind over 14 ℃ of cooling wind-warm syndrome from spinnerets 30cm place.After oiling, the twice oiling roller reels with 500m/min speed.The coiling precursor is carried out the secondary drawing-off, and 65 ℃ of the hot ingot temperature of first order drawing-off stretch 3 times; 125 ℃ of the hot ingot temperature of second level drawing-off, 2.5 times of drawing-offs (hot ingot length 50cm, corresponding heated length 100cm).The fracture strength of gained 500dtex/90f draw twisting multifilament is 84.7CN/tex(9.6g/d), fracture strength CV(%) be 2.94; Elongation at break (%) 19.4, extension at break CV(%) 4.93.
The coiling precursor identical with embodiment 1 carried out the secondary drawing-off.65 ℃ of the heat roller temperatures of first order drawing-off, 4.3 times of drawing-offs; 120 ℃ of second level drawing-off feeding roll temperatures, 155 ℃ of hot plate temperatures (hot plate length 30cm, corresponding heated length 30cm), 1.6 times of drawing-offs.The fracture strength of gained 500dtex/90f draw twisting multifilament is 73.2CN/tex(8.3g/d), fracture strength CV(%) be 3.37; Extension at break (%) 22.0, extension at break CV(%) 5.31.
Claims (6)
1, the present invention is a kind of manufacture method of polypropylene strength fibre, and it comprises spinning technique and drawing process, it is characterized in that adopting suitable acrylic resin to spin fast spinning with routine, carries out two-stage drawing-off and twisting on spindle formula drawing machine.
2, manufacture method as claimed in claim 1 is characterized in that the melt flow index MFI of used acrylic resin is 5～40, is preferably 8～26; Molecular weight distributing index MWD≤7 are preferably below 4.
3, manufacture method as claimed in claim 1 is characterized in that the speed of spinning of precursor is 400～1600 meters/minute, is preferably 450～750 meters/minute; The spinning melt temperature is 225～295 ℃ and is preferably 275～285 ℃; The cooling quench starting point is preferably in 25～35cm place from spinnerets 15～45cm place, and the cooling wind-warm syndrome is below 20 ℃, is preferably below 15 ℃.
4, as claim 1 and 3 described manufacture methods, the actual temperature of the tow that is heated when it is characterized in that first order drawing-off is controlled at 25～95 ℃, is preferably 50～75 ℃; The drawing-off mode of heating can adopt in hot-rolling, hot ingot, hot plate, the hot case any.
5, manufacture method as claimed in claim 4, the actual temperature of the tow that is heated when it is characterized in that second level drawing-off is controlled at below 140 ℃, is preferably 115～130 ℃, and the drawing-off mode of heating preferably adopts a kind of in hot ingot, hot plate, the hot case.If at the heated length of second level drawing-off, when needing the heating of employing feeding roller as (at this moment the corresponding raising of heating-up temperature palpus is decided on heated length and hot stickyization of tow degree) under the unappeasable situation of hot plate length, the temperature of hot-rolling should be controlled at below the hot plate temperature.
6, manufacture method as claimed in claim 5, the heated length of the tow that is heated when it is characterized in that second level drawing-off is 30～150cm, is preferably 100～120cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101819 CN1065497A (en) | 1991-04-03 | 1991-04-03 | The manufacture method of polypropylene strength fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91101819 CN1065497A (en) | 1991-04-03 | 1991-04-03 | The manufacture method of polypropylene strength fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1065497A true CN1065497A (en) | 1992-10-21 |
Family
ID=4905278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91101819 Pending CN1065497A (en) | 1991-04-03 | 1991-04-03 | The manufacture method of polypropylene strength fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1065497A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311110C (en) * | 2001-12-05 | 2007-04-18 | 罗狄亚工业纱线股份公司 | Method for making propylene monofilaments, propylene monofilaments and their use |
| CN104060352A (en) * | 2014-05-30 | 2014-09-24 | 泰州市常沪线网有限公司 | Drafting twisting machine |
| CN104562282A (en) * | 2014-06-25 | 2015-04-29 | 巢湖市荷花渔网有限公司 | Fishing net thread suitable for being used in seawater |
| CN106676656A (en) * | 2017-02-22 | 2017-05-17 | 天鼎丰聚丙烯材料技术有限公司 | Composite drafting system for spun filaments of polypropylene filament needle-punched geotextile and spinning machine |
-
1991
- 1991-04-03 CN CN 91101819 patent/CN1065497A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311110C (en) * | 2001-12-05 | 2007-04-18 | 罗狄亚工业纱线股份公司 | Method for making propylene monofilaments, propylene monofilaments and their use |
| CN104060352A (en) * | 2014-05-30 | 2014-09-24 | 泰州市常沪线网有限公司 | Drafting twisting machine |
| CN104060352B (en) * | 2014-05-30 | 2020-02-28 | 泰州市常沪线网有限公司 | Drafting twisting machine |
| CN104562282A (en) * | 2014-06-25 | 2015-04-29 | 巢湖市荷花渔网有限公司 | Fishing net thread suitable for being used in seawater |
| CN106676656A (en) * | 2017-02-22 | 2017-05-17 | 天鼎丰聚丙烯材料技术有限公司 | Composite drafting system for spun filaments of polypropylene filament needle-punched geotextile and spinning machine |
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| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |