CN1282772C - Polyethylene monofilament high temperature high times drawing technology - Google Patents
Polyethylene monofilament high temperature high times drawing technology Download PDFInfo
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- CN1282772C CN1282772C CN 03150536 CN03150536A CN1282772C CN 1282772 C CN1282772 C CN 1282772C CN 03150536 CN03150536 CN 03150536 CN 03150536 A CN03150536 A CN 03150536A CN 1282772 C CN1282772 C CN 1282772C
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- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
Abstract
The present invention discloses a high-power technological method for drawing polyethylene monofilaments at high temperature, which relates to a method for producing polyethylene monofilaments for fishing, particularly to a drawing technology. The present invention aims to improve the drawing rate of polyethylene monofilaments to improve the strength performance of polyethylene monofilaments for fishing. The present invention has the technical scheme that high-density polyethylene is used as a raw material, spinning is carried out by a melt method, and a thermal drawing technological device is adopted. The present invention is characterized in that the high-density polyethylene used as the raw material is melted by a single screw extruder with the length-diameter ratio of 25:1, and is prepared into primary filaments by matching with a spinneret plate with the length-diameter ratio of 8:1; the primary filaments use glycol as a drawing and heating medium, the temperature of the heating medium is controlled in the range of 112 DEG C to 124 DEG C, and polyethylene monofilaments are rapidly cooled by a gas flow method and wound after being drawn for 12.6 to 15.7 times. The present invention is used for producing polyethylene monofilaments for fishing.
Description
Technical field:
The present invention relates to production method, the especially draft process of fishing with polyethylene monofilament.
Background technology
The fishing polyethylene monofilament is to adopt the high density polyethylene (HDPE) raw material, melt extrudes and obtains spun filament through spinnerets ejection, cooling through plastic extruder; Then spun filament is carried out hot drawing-off at a certain temperature and form the fishing polyethylene monofilament.The spun filament poor mechanical property, adopting hot drawing-off is the main means that improve the polyethylene monofilament strength character, has only through drawing-off to make molecularly oriented in the monofilament later on, just can give its excellent mechanical property.Under certain heat medium and temperature conditions, the intensity of monofilament improves along with the increase of drafting multiple, and elongation at break reduces; Yet, when drafting multiple exceeds appropriate scope, on technology, can't satisfy the requirement that serialization is produced, and the strength character of monofilament and combination property will descend significantly also.At present, fishing is heat medium with water with the hot drawing-off in the polyethylene monofilament production, about 95 ℃ of water temperatures, and drafting multiple can only reach 8～10 times.Fishing is respectively with polyethylene monofilament high-class product intensity index in the SC5005-1988 standard: fracture strength 56cN/tex; Monofilament knot strength 39cN/tex.In order to improve the mechanical property of polyethylene monofilament, the temperature that improves heat medium except needs improves the drafting multiple, also needs and changes the process that heat medium adapts.
Summary of the invention
The technical issues that need to address of the present invention are to improve the degree of draft of polyethylene monofilament to improve the strength character of fishing with polyethylene monofilament.
Technical scheme of the present invention comprises employing high density polyethylene (HDPE) raw material, melts method spinning and hot draft process equipment, it is characterized in that with high density polyethylene (HDPE) raw material draw ratio being 25: 1 single screw extrusion machine fusion, and 8: 1 spinnerets of adapted draw ratio is made spun filament; Spun filament is the drawing-off heat medium with ethylene glycol, the heat medium temperature is controlled in 112 ℃～124 ℃ the scope, after 12.6～15.7 times of the drawing-offs, adopts that the air-flow method is cooled off fast, the rolling polyethylene monofilament.
The polyethylene monofilament fracture strength and the knot strength that adopt this method to produce reach 85cN/tex and 47cN/tex respectively, adopt the quick cooling of air-flow method can remove and reclaim the heat medium that remains in monofilament surface in the drawing-off groove when monofilament is pulled out at a high speed after the drawing-off simultaneously, monofilament behind high temperature, the high drafting is cooled off fast, the raising conservation rate that monofilament interior molecules chain is orientated along the drawing-off direction after hot drawing-off, thus the monofilament tensile property improved.Polyethylene monofilament with this method manufacturing is applied to fish production, under the powerful identical condition of netting twine, can make the consumption of material reduce by 26%, simultaneously because the netting twine diameter has reduced 17%, thereby improve the water filtering performance of netting gear, especially after being applied to the trawlnet fishing gear, to reducing trawl resistance, the production efficiency of fishing for that improves netting gear has remarkable effect.Use trawlnet that high-strength polythene filament material that this method produces makes through trawlnet pond model test and production application presentation of results: catching rate on average improves 11.5% under identical working condition, energy consumption can reduce by 2.3%, and overall economic benefit improves 12～13% technique effect.
The specific embodiment
Embodiment one: the high density polyethylene (HDPE) that with the trade mark is 5000S is a raw material, the employing draw ratio is 25: 1 a single screw extrusion machine, three sections barrel temperatures are controlled at 195～200 ℃, 240～245 ℃ and 265～270 ℃ respectively, the spinnerets temperature is controlled at 265～270 ℃, spinning speed is 10m/min, the crystallisation by cooling temperature is 50～60 ℃, the preparation spun filament; Spun filament is the drawing-off heat medium with ethylene glycol, temperature is controlled at 122～124 ℃, heating interval length is 60cm, monofilament the heating drawing-off after and before the linear velocity ratio be 15.7, monofilament after the drawing-off through the air-flow method cool off fast, rolling, obtaining diameter and be 0.19mm, line density and be 34tex, fracture strength and be 85cN/tex, elongation at break 18%, monofilament knot strength is 43cN/tex, is applicable to the high-strength fishing polyethylene monofilament of big specification fishing with the usefulness of netting twine and rope.
Embodiment two: the high density polyethylene (HDPE) that with the trade mark is 5000S is a raw material, the employing draw ratio is 25: 1 a single screw extrusion machine, three sections barrel temperatures are controlled at 195～200 ℃, 240～245 ℃ and 265～270 ℃ respectively, the spinnerets temperature is controlled at 265～270 ℃, spinning speed is 15m/min, the crystallisation by cooling temperature is 50～60 ℃, the preparation spun filament; Spun filament is the drawing-off heat medium with ethylene glycol, the control temperature is at 116～118 ℃, heating interval length is 80cm, monofilament the heating drawing-off after and before the linear velocity ratio be 12.6, monofilament after the drawing-off through the air-flow method cool off fast, rolling, obtaining diameter and be 0.21mm, line density and be 40tex, fracture strength and be 68cN/tex, elongation at break 15%, monofilament knot strength is 47cN/tex, is suitable for usefulness is made in the small dimension fishing of netting twine high-strength fishing polyethylene monofilament.
Claims (3)
1. polyethylene monofilament high temperature high drafting process adopts the high density polyethylene (HDPE) raw material, melts method spinning and hot draft process equipment, single screw extrusion machine, 8: 1 spinnerets of draw ratio, melt-out spinning is made spun filament, spun filament is the drawing-off heat medium with ethylene glycol, it is characterized in that the extruder screw draw ratio that adopts is 25: 1; Drawing-off heat medium temperature is controlled in 112 ℃～124 ℃ the scope, after 12.6～15.7 times of the drawing-offs, adopts that the air-flow method is cooled off fast, the rolling polyethylene monofilament.
2. polyethylene monofilament high temperature high drafting process according to claim 1, it is characterized in that with the trade mark being the high density polyethylene (HDPE) raw material of 5000S, three sections barrel temperatures of single screw extrusion machine are controlled at 195～200 ℃, 240～245 ℃ and 265～270 ℃ respectively, the spinnerets temperature is controlled at 265～270 ℃, spinning speed 10m/min, the crystallisation by cooling temperature is 50～60 ℃, the preparation spun filament; The heat medium temperature is controlled at 122～124 ℃, heating interval length 60cm, monofilament the heating drawing-off after and before the linear velocity ratio be 15.7.
3. polyethylene monofilament high temperature high drafting process according to claim 1, it is characterized in that with the trade mark being that the high density polyethylene (HDPE) of 5000S is a raw material, three sections barrel temperatures of single screw extrusion machine are controlled at 195～200 ℃, 240～245 ℃ and 265～270 ℃ respectively, the spinnerets temperature is controlled at 265～270 ℃, spinning speed is 15m/min, the crystallisation by cooling temperature is 50～60 ℃, the preparation spun filament; The heat medium temperature is controlled at 116～118 ℃, and heating interval length is 80cm, monofilament the heating drawing-off after and before the linear velocity ratio be 12.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150536 CN1282772C (en) | 2003-08-25 | 2003-08-25 | Polyethylene monofilament high temperature high times drawing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03150536 CN1282772C (en) | 2003-08-25 | 2003-08-25 | Polyethylene monofilament high temperature high times drawing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590603A CN1590603A (en) | 2005-03-09 |
| CN1282772C true CN1282772C (en) | 2006-11-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03150536 Expired - Fee Related CN1282772C (en) | 2003-08-25 | 2003-08-25 | Polyethylene monofilament high temperature high times drawing technology |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395386C (en) * | 2005-05-10 | 2008-06-18 | 东华大学 | Method of improving surface cohesion performance of relative molecular weight polyethylene |
| CN101580984B (en) * | 2008-05-12 | 2011-01-12 | 中国水产科学研究院东海水产研究所 | Method for processing high-performance polyethylene twisting threads for waving netting or binding a steel rope |
| CN101624788B (en) * | 2008-07-07 | 2011-11-02 | 中国水产科学研究院东海水产研究所 | Method for processing cultivation net cage or passive small-sized high-performance head rope for fishing gear |
| CN101624787B (en) * | 2008-07-07 | 2011-08-10 | 中国水产科学研究院东海水产研究所 | Method for manufacturing net cage or different medium-sized fiber mixing steel cable for set fishing gear |
| CN101666014B (en) * | 2008-09-01 | 2011-02-09 | 中国水产科学研究院东海水产研究所 | Method for manufacturing anti-turning high-strength net mesh for aquaculture net cages and catching and fishing tools |
| CN103726113A (en) * | 2013-12-25 | 2014-04-16 | 中国科学院化学研究所 | Novel fiber-drawing hot bath medium and application thereof |
| CN107034538A (en) * | 2017-05-27 | 2017-08-11 | 巢湖市鼎盛渔具有限公司 | A kind of processing method of fishing high-strength polythene filament |
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2003
- 2003-08-25 CN CN 03150536 patent/CN1282772C/en not_active Expired - Fee Related
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| CN1590603A (en) | 2005-03-09 |
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Assignee: Zhoushan Yueda special Fishing Tackle Co., Ltd. Assignor: East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences Contract record no.: 2010330001024 Denomination of invention: Polyethylene monofilament high temperature high times drawing technology Granted publication date: 20061101 License type: Exclusive License Open date: 20050309 Record date: 20100526 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061101 Termination date: 20190825 |
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| CF01 | Termination of patent right due to non-payment of annual fee |