CN103074739A - Production method for polypropylene spun-bonded needle-punched geotextile - Google Patents
Production method for polypropylene spun-bonded needle-punched geotextile Download PDFInfo
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Abstract
A production method for a polypropylene spun-bonded needle-punched geotextile mainly includes the following steps: polypropylene chips are conveyed into a screw extruder and extruded out, the melt enters a spinning manifold via a filter, and is measured and extruded into filaments by a spinneret plate, the filaments are cooled by cross wind, drafted by duct airflow, then separated, swayed and formed into a web on a lapper, the web is outputted to a needle machine and needled to be bound, and after tension is adjusted, the web is trimmed and rolled, so that the polypropylene spun-bonded needle-punched geotextile is formed. Various processes after spinning, such as bundle stretching, rolling, drying, shaping, cutting off, packing, unpacking, blending, carding and web forming, are dispensed, consequently, the production process is greatly shortened, the production cost is lower, and the production efficiency is higher; the product has higher strength and better uniformity, thermal shrinkage and various indexes are more stable, and the product is incomparable with polypropylene staple geotextile and the like.
Description
Technical field
The present invention relates to a kind of preparation method of synthetic fiber nonwoven products.
Background technology
Those skilled in the art knows, geotextiles has the functions such as filtration, draining, isolation and reinforcing, enhancing, and for this reason, geotextiles becomes the fourth-largest construction material after China's reinforcing bar, cement, timber.At present, the polypropylene geotextile production technology of China mainly is to adopt polypropylene chopped fiber through carding, cross lapping, the fixed geotextiles of making of acupuncture.Polypropylene chopped fiber is by the screw extruder melt spinning by the polypropylene fibre section, through cooling, boundling, coiling, doff form primery vascular bundle, again with a plurality of primery vascular bundles boundling again, through after-drawing, curling, the operations such as typing drying, cut-out, packing are made the finished product staple fibre, this process is to be made by two-step process, and is to be finished by chemical fibre factory professional, that produce polypropylene chopped fiber.After the finished product short fiber was transported to polypropylene geotextile factory, the operations such as, cut edge coiling fixed through shredding, carding, cross lapping, acupuncture were made polypropylene geotextile.Its weak point is: 1, the production procedure of short fiber polypropylene geotextile is long, and production efficiency is low, and energy consumption is large.2, because this technique is at first polypropylene fiber to be cut to staple fibre, carding, acupuncture are consolidated into non-weaving cloth again, tension brute force and the extension at break (percentage elongation) of cloth cover are affected inevitably, thereby have restricted the partial properties index of polypropylene geotextile.
Summary of the invention
The object of the present invention is to provide that a kind of process is simple, production efficiency is high, the production method of the polypropylene spunbond acupuncture geotextiles of less energy consumption, good product quality.The method is as raw material take polypropylene (polypropylene fibre or PP), one-step method is directly made polypropylene spunbond acupuncture geotextiles, namely melt extrude through delivering into screw extruder, enter spinning manifold after being filtered, be spun into filament through metering from the spinnerets ejection, cooled off by lateral blowing, the chimneying drawing-off is by sub-wire, pendulum wire, form fiber web at lapper, exporting fibre web to needing machine, to carry out acupuncture fixed, and the side cut rolling forms polypropylene spunbond acupuncture geotextiles.
Polymer of the present invention is the isotactic structure, and melt index is greater than 15, and it can be polymer chips, polymer powders or take isotactic polypropylene as main body through the mixture of chemistry or physical modification.
The process conditions that the present invention respectively goes on foot operation are as follows:
⑴ melt extrude: the screw extruder temperature: 160～280 ℃, the best confidential employing compounding effect of screw extruding is good, the polypropylene fibre screw extruder of big L/D ratio, the draw ratio of screw extruder is greater than 28, the time of staying of material in screw extruder is just longer like this, material plasticizing just more abundant is conducive to spinning.
⑵ spinning: spinning temperature: 225～290 ℃, to guarantee cloth cover brute force, acupuncture consolidation effect and the conservancy property requirement of polypropylene spunbond acupuncture geotextiles.Preferably filament number is controlled between 4～12dpf, and with physical indexs such as assurance product cloth cover brute forces, preferably strength of filament is greater than 4.2CN/dtex.
⑶ cooling: lateral blowing wind speed: 0.5～1.2m/s, the lateral blowing temperature: 14～20 ℃, lateral blowing humidity: more than 70%.
⑷ air drawing: air drawing speed preferably adopts pipe type air flow drawing device greater than 4500m/min.
⑸ sub-wire, pendulum wire: the frequency of pendulum wire device is greater than 800n/min, and the pendulum wire device amplitude of oscillation is greater than 40mm, with the uniformity that guarantees cloth cover and less in length and breadth to the brute force ratio.
⑹ become net: the suction net wind speed on the lapping machine, is avoided turning over the net phenomenon and is occured to offset the high speed attenuating blast to the impact of fibre web greater than 8m/s, guarantees the stable of product.
⑺ pre-needling: pre-needling bestock: 4000～6000 pin/rice, 600～1800 beats/mins of pre-needling frequencies, pre-needling traverse: 30～50mm.
⑻ master's acupuncture: main acupuncture bestock: 4000～6000 pin/rice, 700～2000 beats/mins of main punch frequency, main acupuncture traverse: 20～40mm.
⑼ cut coiling: winding speed: 2～20m/min obtains polypropylene spunbond acupuncture geotextiles at last.
The present invention compared with prior art has following advantage:
1, the boundling that has saved the spinning post processing stretches, curling, dry, typing, cut off, pack and open bag, mixing, combing and become each procedure such as net, greatly shortened production process, and production cost is lower, and production efficiency is higher.
2, better, the thermal contraction of higher, the uniformity of product brute force and indices are more stable, are that polypropylene chopped fiber geotextiles etc. can not be compared.
Description of drawings
Fig. 1 is process flow diagram of the present invention.
The specific embodiment
Embodiment 1:
The polypropylene fibre raw material is delivered into screw extruder melt extrude, the screw extruder big L/D ratio is that draw ratio is the polypropylene fibre screw extruder of 29:1, Qi Ge district temperature: 165 ℃, and 200 ℃, 230 ℃, 250 ℃, 250 ℃, 260 ℃, 265 ℃, 265 ℃.Melt is 11Mpa through pressure behind the filter, then enters spinning manifold, spray from spinnerets through metering, and component pressure: 15Mpa, spinning temperature: 265 ℃, filament number is controlled at 6dpf, and strength of filament is greater than 4.2CN/dtex.The filament that is spun into is cooled off by lateral blowing, lateral blowing wind speed: 0.7m/s, and the lateral blowing temperature: 17 ℃, lateral blowing humidity: more than 70%.Cooled filament carries out air drawing by pipe type air flow drawing device, and air drawing speed is 5000m/min.Drawing-off pressure is 0.60 Mpa.Pendulum wire after sub-wire, the frequency 900n/min of pendulum wire device, pendulum wire device amplitude of oscillation 45mm.Then form fiber web at lapping machine, lapping speed: 8m/min inhales the net wind speed greater than 8m/s, 90 ℃ of pony press temperature.Export fiber web to needing machine, carry out pre-needling, bestock: 5000 pin/rice, 960 beats/mins of pre-needling frequencies, pre-needling traverse: 40mm.Then main acupuncture is fixed, bestock: 5000 pin/rice, 1100 beats/mins of main punch frequency, main acupuncture traverse: 30mm.Cut edge, cut into 7.0 meters of fabric widths again and reel afterwards, winding speed: 7.8m/min obtains grammes per square metre 120g/m at last
2Polypropylene spunbond acupuncture geotextiles.
Embodiment 2:
The PP raw material is delivered into screw extruder melt extrude, the screw extruder big L/D ratio is that draw ratio is the polypropylene fibre screw extruder of 30:1, Qi Ge district temperature: 165 ℃, and 200 ℃, 240 ℃, 255 ℃, 255 ℃, 260 ℃, 270 ℃, 270 ℃.Melt is 12Mpa through pressure behind the filter, then enters spinning manifold, spray from spinnerets through metering, and component pressure: 16Mpa, spinning temperature: 270 ℃, filament number is controlled at 8dpf, and strength of filament is greater than 4.2CN/dtex.The filament that is spun into is cooled off by lateral blowing, lateral blowing wind speed: 0.9m/s, and the lateral blowing temperature: 16 ℃, lateral blowing humidity: more than 70%.Cooled filament carries out air drawing by pipe type air flow drawing device, and air drawing speed is 4600m/min.Drawing-off pressure is 0.65 Mpa.Pendulum wire after sub-wire, the frequency 850n/min of pendulum wire device, pendulum wire device amplitude of oscillation 50mm.Then form fiber web at lapping machine, lapping speed: 6m/min inhales the net wind speed greater than 8m/s, 100 ℃ of pony press temperature.Export fiber web to needing machine, carry out pre-needling, bestock: 4000 pin/rice, 900 beats/mins of pre-needling frequencies, pre-needling traverse: 40mm.Then main acupuncture is fixed, bestock: 4000 pin/rice, 1000 beats/mins of main punch frequency, main acupuncture traverse: 30mm.Cut edge, cut into 6.6 meters of fabric widths again and reel afterwards, winding speed: 5.9m/min obtains grammes per square metre 350g/m at last
2Polypropylene spunbond acupuncture geotextiles.
Claims (7)
1. the production method of a polypropylene spunbond acupuncture geotextiles, it is characterized in that: it is as raw material take polypropylene, melt extrude through delivering into screw extruder, enter spinning manifold after being filtered, be spun into filament through metering from the spinnerets ejection, cooled off by lateral blowing, the chimneying drawing-off is by sub-wire, pendulum wire, form fiber web at lapper, exporting fibre web to needing machine, to carry out acupuncture fixed, and the side cut rolling forms polypropylene spunbond acupuncture geotextiles.
2. the production method of polypropylene spunbond acupuncture geotextiles according to claim 1 is characterized in that: the described process conditions that respectively go on foot operation are as follows:
A screw extruder temperature: 160～280 ℃;
B spinning temperature: 225～290 ℃;
C lateral blowing wind speed: 0.5～1.2m/s, the lateral blowing temperature: 14～20 ℃, lateral blowing humidity: more than 70%;
D pre-needling bestock: 4000～6000 pin/rice, 600～1800 beats/mins of pre-needling frequencies, pre-needling traverse: 30～50mm;
E air drawing speed is greater than 4500m/min;
The frequency of f pendulum wire device is greater than 800n/min, and the pendulum wire device amplitude of oscillation is greater than 40mm;
Suction net wind speed on the g lapping machine is greater than 8m/s, pony press temperature: 80～150 ℃;
H master's acupuncture bestock: 4000～6000 pin/rice, 700～2000 beats/mins of main punch frequency, main acupuncture traverse: 20～40mm;
I winding speed: 2～20m/min.
3. the production method of polypropylene spunbond acupuncture geotextiles according to claim 1 and 2, it is characterized in that: its polymer is the isotactic structure, and melt index is greater than 15.
4. the production method of polypropylene spunbond acupuncture geotextiles according to claim 3, it is characterized in that: the product fabric width is 2.5～8.0 meters, the product grammes per square metre is 80～600g/m
2
5. the production method of polypropylene spunbond acupuncture geotextiles according to claim 4, it is characterized in that: the fibre single thread fiber number is controlled between 4～12dpf, and the fibre single thread brute force is greater than 4.2CN/dtex.
6. the production method of polypropylene spunbond acupuncture geotextiles according to claim 5, it is characterized in that: the product needling density is 30～500 pins/cm
2
7. the production method of polypropylene spunbond acupuncture geotextiles according to claim 6, it is characterized in that: the draw ratio of screw extruder is greater than 28:1.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361882A (en) * | 2013-05-29 | 2013-10-23 | 仪征易力土工合成材料有限公司 | Production technology of staple fiber needle punched geotextile |
| CN104775235A (en) * | 2015-03-12 | 2015-07-15 | 绍兴励达无纺布有限公司 | Production line for polypropylene spunbonded needle-punched geotechnical cloth and manufacturing method |
| CN106498627A (en) * | 2016-10-10 | 2017-03-15 | 天鼎丰材料技术有限公司 | The production system of polypropylene spun-bonded needle-punched geotextiles, production method |
| CN106676757A (en) * | 2017-02-22 | 2017-05-17 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament geotextile with high strength and corrosion resistance and preparation method thereof |
| CN106868718A (en) * | 2017-02-22 | 2017-06-20 | 天鼎丰聚丙烯材料技术有限公司 | A kind of high-strength polypropylene spun-bonded needle-punched geotextiles and preparation method thereof |
| CN106906710A (en) * | 2017-03-06 | 2017-06-30 | 东华大学 | A kind of preparation method of pp geo textiles/GSZ composite geotextile material |
| CN106968051A (en) * | 2017-03-06 | 2017-07-21 | 东华大学 | The preparation method of polypropylene geotextile composite drainage network with anti-filter drain function |
| CN107401155A (en) * | 2016-12-06 | 2017-11-28 | 青海富腾生态科技有限公司 | The improved process and base fabric cracking resistance experimental provision of a kind of waterproof anticracking base fabric |
| CN107460640A (en) * | 2017-08-04 | 2017-12-12 | 山东荣泰新材料科技有限公司 | Non-woven fabrics and its preparation method and application |
| CN107938177A (en) * | 2017-12-27 | 2018-04-20 | 大连华阳新材料科技股份有限公司 | With position iso-fineness polyester filament geotextiles preparation method |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN109208172A (en) * | 2018-10-24 | 2019-01-15 | 大连华阳新材料科技股份有限公司 | A kind of online dual-purpose type of spun-bonded non-woven adds the production method of reinforcing material |
| CN109554827A (en) * | 2018-10-24 | 2019-04-02 | 大连华阳新材料科技股份有限公司 | A kind of online creel reinforcement production method of Spunbond/Needling Nonwovens |
| CN111826935A (en) * | 2020-07-25 | 2020-10-27 | 朱姣 | Shaping treatment method for non-woven geotextile |
| CN113564738A (en) * | 2021-08-19 | 2021-10-29 | 泰安现代塑料有限公司 | Spinning drafting device and polypropylene fiber geotextile production line |
| CN114016214A (en) * | 2021-11-04 | 2022-02-08 | 大连华阳新材料科技股份有限公司 | Method for producing filament spun-bonded non-woven fabric |
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| CN103361882B (en) * | 2013-05-29 | 2016-03-09 | 仪征易力土工合成材料有限公司 | A kind of chopped fiber needle-punched geotextiles production technology |
| CN103361882A (en) * | 2013-05-29 | 2013-10-23 | 仪征易力土工合成材料有限公司 | Production technology of staple fiber needle punched geotextile |
| CN104775235A (en) * | 2015-03-12 | 2015-07-15 | 绍兴励达无纺布有限公司 | Production line for polypropylene spunbonded needle-punched geotechnical cloth and manufacturing method |
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| CN106676757A (en) * | 2017-02-22 | 2017-05-17 | 天鼎丰聚丙烯材料技术有限公司 | Polypropylene filament geotextile with high strength and corrosion resistance and preparation method thereof |
| CN106868718A (en) * | 2017-02-22 | 2017-06-20 | 天鼎丰聚丙烯材料技术有限公司 | A kind of high-strength polypropylene spun-bonded needle-punched geotextiles and preparation method thereof |
| CN106868718B (en) * | 2017-02-22 | 2020-02-21 | 天鼎丰聚丙烯材料技术有限公司 | High-strength polypropylene spun-bonded needle-punched geotextile and preparation method thereof |
| CN106906710A (en) * | 2017-03-06 | 2017-06-30 | 东华大学 | A kind of preparation method of pp geo textiles/GSZ composite geotextile material |
| CN106968051A (en) * | 2017-03-06 | 2017-07-21 | 东华大学 | The preparation method of polypropylene geotextile composite drainage network with anti-filter drain function |
| CN107460640B (en) * | 2017-08-04 | 2020-02-18 | 山东恒鹏卫生用品有限公司 | Non-woven fabric and preparation method and application thereof |
| CN107460640A (en) * | 2017-08-04 | 2017-12-12 | 山东荣泰新材料科技有限公司 | Non-woven fabrics and its preparation method and application |
| CN107938177A (en) * | 2017-12-27 | 2018-04-20 | 大连华阳新材料科技股份有限公司 | With position iso-fineness polyester filament geotextiles preparation method |
| CN108239822A (en) * | 2018-03-14 | 2018-07-03 | 天津工业大学 | A kind of Lyocell filament nonwovens material and preparation method thereof |
| CN109208172A (en) * | 2018-10-24 | 2019-01-15 | 大连华阳新材料科技股份有限公司 | A kind of online dual-purpose type of spun-bonded non-woven adds the production method of reinforcing material |
| CN109554827A (en) * | 2018-10-24 | 2019-04-02 | 大连华阳新材料科技股份有限公司 | A kind of online creel reinforcement production method of Spunbond/Needling Nonwovens |
| CN111826935A (en) * | 2020-07-25 | 2020-10-27 | 朱姣 | Shaping treatment method for non-woven geotextile |
| CN113564738A (en) * | 2021-08-19 | 2021-10-29 | 泰安现代塑料有限公司 | Spinning drafting device and polypropylene fiber geotextile production line |
| CN114016214A (en) * | 2021-11-04 | 2022-02-08 | 大连华阳新材料科技股份有限公司 | Method for producing filament spun-bonded non-woven fabric |
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