CN100352990C - Process and for producing Jinlun Non-wowen cloth by spinning-bonding method its device and jinlun non-woven cloth products - Google Patents
Process and for producing Jinlun Non-wowen cloth by spinning-bonding method its device and jinlun non-woven cloth products Download PDFInfo
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- CN100352990C CN100352990C CNB011408782A CN01140878A CN100352990C CN 100352990 C CN100352990 C CN 100352990C CN B011408782 A CNB011408782 A CN B011408782A CN 01140878 A CN01140878 A CN 01140878A CN 100352990 C CN100352990 C CN 100352990C
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Abstract
The present invention relates to a making process of chinlon non-woven fabric with a spun-bond method and equipment thereof. Polyamide is taken as raw material for chinlon non-woven fabric. The method comprises raw material drying, extruding, melting, filtering, cooling, drafting, separating, net laying, hot rolling and winding. An obtained chinlon non-woven fabric product has the characteristics of soft feeling, high intensity, good abrasive resistance, high recovery rate, strong fatigue resistance, etc. The chinlon non-woven fabric has wide application.
Description
Technical field
The present invention relates to the polyamide is raw material, adopts spun-bond process to make the technology of polyamide fibre nonwoven fabric.
The invention still further relates to the equipment of making the polyamide fibre nonwoven fabric with spun-bond process.
The present invention relates to more than one polyamide fibre nonwoven fabric products of stating technology and device fabrication simultaneously.
Background technology
The production of nonwoven fabric can be adopted various raw materials, the whole bag of tricks, the different product of obtained performance.
In the prior art, the production of nonwoven fabric generally comprises two technical process, at first be that raw material (high molecular polymer) is carried out melt-spun, make long filament, again long filament further being processed into staple fibre, is raw material with long filament or staple fibre again, carries out hot calendering bonding and makes nonwoven fabric, whole technical process often needs two production lines even two factories to finish, i.e. spinning and hot rolling are two production lines independently.
At present a technology that goes on foot into cloth of development comprises two kinds of meltblown and spun-bond processes, wherein meltblown be with polymer through melt extruding, through single spinning head spray silk, under hot-air, stretch rapidly, be cooled to net, reinforcing through self heat bonding or hot rolling becomes nonwoven fabric; And spun-bond process be with polymer through the extruder extruding spinning, stretching forms continuous filament yarn, becomes net by laying (dividing silk), again through heat bonding, chemical adhesion or acupuncture, water thorn reinforcement means, makes fiber become nonwoven fabric.On speed of production and output, spun-bond process is compared meltblown and is had bigger advantage.
Chinese patent application 98802490.X discloses a kind of equipment and method of producing drawn synthetic filaments, it is a raw material with polyethylene terephthalate (PET), pass through device for spinning, heater and stretching device obtain long filament, owing between device for spinning and stretching device, be provided with a heater, make the long filament of acquisition have higher intensity and low elongation, but owing to be provided with heater, make its equipment and technology comparatively complicated, it has still only obtained long filament simultaneously, do not reach a purpose that goes on foot into cloth, do not do detailed description for further being processed into nonwoven fabric.
Disclose a kind of method of making synthetic threads or fiber in WO 92/01093, it is with high molecular polymer, and particularly polyamide, polyester and polypropylene are raw material, obtains to have the meticulousr yarn of less percentage of elongation by fusion, the cooling drawing-off of spray silk back.What this patent application disclosed also is a kind of method of spinning, and the product of its acquisition also is yarn or fiber.
The raw material that adopts spun-bond process to produce nonwoven fabric in the market is polypropylene fibre (trade name polypropylene fibre), all has certain limitation aspect intensity and the pliability because of its raw material properties has determined the nonwoven polypropylene fabric product.
Polyamide fiber (commodity are called polyamide fibre) becomes the good raw material of nonwoven fabric, but adopts spun-bond process to make the polyamide fibre nonwoven fabric with polyamide raw materials at present because of its good flexibility, high strength, performance such as wear-resisting.
Summary of the invention
The object of the present invention is to provide a kind of is the technology that raw material, employing spun-bond process are made the polyamide fibre nonwoven fabric with the polyamide.
Another object of the present invention is to provide spun-bond process to make the equipment of polyamide fibre nonwoven fabric.
The polyamide fibre nonwoven fabric product that provides more than one to state technology and device fabrication is provided a further object of the present invention.
According to an aspect of the present invention, adopt polyamide (trade name polyamide fibre) for making the raw material of nonwoven fabric, polyamide preferably uses polyamide 6 (polyamide fibre 6 or nylon 6) or polyamide 66 (polyamide 66), and its molecular formula and structural formula are:
Polyamide 6
Molecular formula: (C
6H
11ON) n; Structural formula:
Polyamide 66
Molecular formula: (C
12H
22O
2N
2) n; Structural formula:
According to a further aspect in the invention, the technology of spun-bond process manufacturing polyamide fibre nonwoven fabric mainly may further comprise the steps: raw material drying, extrusion molten, filtration, spinning, cooling, drawing-off, the lapping of branch silk, hot rolling and rolling.
The present invention needs polyamide raw materials is carried out intensive drying before feeding, in a preferred embodiment of the invention polyamide raw materials is placed the hot blast of a drying device by 115 ℃～150 ℃ that raw material is carried out drying, removed the moisture in the raw material, avoid in the subsequent technique flow process air, moisture to enter melt and cause in the middle of silk, producing bubble in the spinning process, thereby cause the fracture of silk in the drafting process.
The raw material of drying enters the technology of extrusion molten by feed system, the present invention adopts screw extruder to make raw materials melt and fully mixes, the temperature of screw extruder is 230～300 ℃, be preferably 240～290 ℃, more preferably 250～275 ℃, the proper temperature of screw extruder has guaranteed the abundant fusion of raw material, if temperature is too low, then melt is mobile relatively poor, not only makes undercompounding, also can cause damage to equipment; If temperature is too high, then easily make macromolecular cleavage, influence the key property of molecule.
Material after the melting mixing enters measuring pump through melt pipe after removing impurity after filtration, and the temperature of melt pipe should keep the temperature with the melt basically identical, distributes the influence that spinning is brought to prevent heat; The temperature of melt pipe is 230～300 ℃, is preferably 240～290 ℃, more preferably 250～270 ℃.Measuring pump evenly accurately is assigned to the melt of fusion on each spinning station by distribution duct.
Spinning technique carries out in spinning chamber, comprises filament spinning component and cooling wind window, should keep suitable temperature in the filament spinning component, to guarantee the stability of spinning, reaches crystallization silk certain fiber number, stable to be spun into.The temperature of filament spinning component is 230～300 ℃, is preferably 240～290 ℃, more preferably 250～275 ℃.Cooling wind window carries out high speed crystallization cooling to spun strand from filament spinning component.
The first growing filament of cooling enters drafting system and carries out drawing-off, make the macromolecule lattice arrangement of long filament neat, improve the big molecule degree of orientation vertically in the long filament, make it produce certain mechanical property, make fiber obtain necessary strength, ABRASION RESISTANCE and suitable percentage elongation.In a preferred embodiment of the invention, adopt the drawing-off of high velocity air tubular type, under same pressure, air quantity condition, the speed of slit drawing-off of tubular type draw ratio or box-type drawing-off wind is fast, simultaneously required little energy, tubular type drawing-off adjustment region is narrower than slit drawing-off in addition, can carry out the adjusting of subrange in drafting process.Draft speed is 3000～6000 meters/minute in the present invention, be preferably 3000～5000m/minute, more preferably 3000～4000 meters/minute.Obtaining fiber number after drawing-off is the fiber at 1～3 dawn.
The long filament that comes out from drafting tube is transported on the net arrangement by one fen silk device and is layered on silk on the lace curtaining equably, the purpose of dividing the silk device is to avoid sticking together between the monofilament, hand over also and tangle, the air draft system that is arranged at into the net arrangement below can be adsorbed on fibre web on the lace curtaining securely, simultaneously unnecessary wind is drained.
The fibre web of completing is admitted to hot rolling system and pressurizes and reinforce to form nonwoven fabric, and the control of hot-rolled temperature and pressure is most important for the quality of the nonwoven fabric that forms.Temperature, hypotony, then not fusion fully of silk can not bond well, and temperature, hypertonia then can cause a undue fusion, and form lump or make cloth become film.The temperature of hot rolling is 150～240 ℃, and pressure is 5000～15000Kpa; Preferred temperature is 160～230 ℃, and pressure is 6000～14000Kpa; More preferably temperature is 175～220 ℃, and pressure is 8000～12000Kpa.
After nonwoven fabric through obtaining after the hot rolling cools off fast by a chill roll, just can send into up-coiler and carry out rolling acquisition finished product.
According to another aspect of the invention, the equipment that is used to make spun-bond process polyamide fibre nonwoven fabric of the present invention mainly comprises, drying system, feed system, screw extruder, filter, measuring pump, melt pipe, spinning manifold, drafting system, branch silk device, lapper, hot-rolling mill and winder, in spinning manifold, be provided with filament spinning component and cooling wind window, below lapper, further be provided with an air draft system.
Have soft, more soft and smooth than polypropylene fibre, terylene non-woven fabric with the polyamide fibre nonwoven fabric of technology of the present invention and device fabrication; And its intensity height, ABRASION RESISTANCE is good, and is higher 10 times, higher 20 times than wool than cotton; Its elastic recovery rate height, fatigue performance is strong, but has water imbibition, and when the elongation certain proportion, its elastic recovery rate can reach 100%.Because of its DIMENSIONAL STABILITY is strong, anti-bending, purposes is very extensive, can be used for making disposable garment, footwear liner etc.
Description of drawings
Fig. 1 is the basic composition figure of present device.
The specific embodiment
Below in conjunction with accompanying drawing,, describe in detail but do not limit the present invention by description to preferred embodiment of the present invention.
Embodiment 1
As shown in Figure 1, polyamide 6 (PA6) section place drying system 1 at 130 ℃ with heated-air drying, deliver to hopper 2 by pneumatic conveyer, at this PA6 section and various auxiliary agents (brightening agent for example, band look auxiliary agent and various additive) fully mix reserve and send into screw extruder 3 and carry out extrusion molten, the temperature of extruder is 250 ℃, by charging, compression, behind the metering several stages, material is fully sent into filter 4 after the melting mixing, at this with the impurity in the material, as carbon, ash grade carry out filtering after, material enters measuring pump 6 by melt pipe 5, measuring pump is by evenly accurately being assigned to the material of fusion on each spinning station in the distribution duct 7, and the temperature of melt pipe and distribution duct remains on about 250 ℃.
Spinning is carried out in spinning chamber, and filament spinning component 8 spun silks carry out air-cooled through cooling wind window 81, and wind-warm syndrome is 16～20 ℃, and wind speed is 3～7 meter per seconds, forms crystallization growing filament just.First growing filament is admitted to high velocity air drafting tube 9 and carries out drawing-off, and draft speed is 3500 meters/minute, and obtaining fiber number after the drawing-off is the fiber of 1～1.5D.
The strand that comes out from drafting tube is transported to lapper 11 through one fen silk device 10 and carries out lapping, the lapper below is provided with air draft system 12, the fibre web of completing enters hot-rolling mill 13 heating and pressurizing hot rollings, the temperature of hot rolling is 200 ℃, pressure is 10000Kpa, sends into up-coiler 14 rollings after the quick cooling of nonwoven fabric through a chill roll that hot rolling forms and obtains polyamide fibre nonwoven fabric product.
Embodiment 2～4
With embodiment 1, process conditions see Table 1 substantially for technological process and equipment:
Table 1 polyamide fibre non-woven fabrics craft condition
| The screw extruder temperature (℃) | The melt pipe temperature (℃) | Spinning body temperature (℃) | Draft speed (rice/minute) | Hot-rolled temperature (℃) | Hot rolling pressure (KPa) |
| 280 | 280 | 280 | 3000 | 230 | 13800 |
| 260 | 260 | 260 | 4000 | 180 | 8000 |
| 230 | 230 | 230 | 5500 | 150 | 6000 |
That the polyamide fibre nonwoven fabric product that is obtained by above technology has is soft, intensity is high, elastic recovery rate is high, anti-curved characteristics.
The present invention can also adopt polyamide 66 or other available polyamide raw materials as spinning material, and its processing step and flow process are basic identical.
The above description of this invention does not limit the present invention, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to scope of the present invention.
Claims (5)
1, a kind of is the technology that raw material is made nonwoven fabric with the polyamide, it is characterized in that, may further comprise the steps:
1) polyamide raw materials is carried out drying;
2) dried raw material is carried out extrusion molten, obtain the material of fusion;
3) material with fusion filters, measures and distributes;
4) spinning, and spun strand carried out crystallisation by cooling, obtain growing filament just;
5) described growing filament is just carried out drawing-off, obtain the fiber of certain fiber number;
6) described fiber is divided the silk lapping;
7) hot rolling obtains the nonwoven fabric product;
Wherein, the temperature of described extrusion molten is 230～300 ℃, temperature is 230～300 ℃ in described filtration, metering and the assigning process, described spinning temperature is 230～300 ℃, described draft speed is 3000～6000 meters/minute, described hot-rolled temperature is 150～240 ℃, and described hot rolling pressure is 5000～15000Kpa.
2, according to claim 1 is the technology that raw material is made nonwoven fabric with the polyamide, it is characterized in that described polyamide raw materials is polyamide 6 or polyamide 66.
3, according to claim 1 is the technology that raw material is made nonwoven fabric with the polyamide, it is characterized in that, the temperature of described extrusion molten is 240～290 ℃, temperature is 240～290 ℃ in described filtration, metering and the assigning process, described spinning temperature is 240～290 ℃, described draft speed be 3000～5000m/minute, described hot-rolled temperature is 160～230 ℃, described hot rolling pressure is 6000～14000Kpa.
4, according to claim 3 is the technology that raw material is made nonwoven fabric with the polyamide, it is characterized in that, the temperature of described extrusion molten is 250～275 ℃, temperature is 250～275 ℃ in described filtration, metering and the assigning process, described spinning temperature is 250～275 ℃, described draft speed is 3000～4000 meters/minute, and described hot-rolled temperature is 175～220 ℃, and described hot rolling pressure is 8000～12000Kpa.
5, according to claim 2 is the technology that raw material is made nonwoven fabric with the polyamide, it is characterized in that, the drawing-off of high velocity air tubular type is adopted in drawing-off described in the step 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011408782A CN100352990C (en) | 2001-09-21 | 2001-09-21 | Process and for producing Jinlun Non-wowen cloth by spinning-bonding method its device and jinlun non-woven cloth products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011408782A CN100352990C (en) | 2001-09-21 | 2001-09-21 | Process and for producing Jinlun Non-wowen cloth by spinning-bonding method its device and jinlun non-woven cloth products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1408921A CN1408921A (en) | 2003-04-09 |
| CN100352990C true CN100352990C (en) | 2007-12-05 |
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| CNB011408782A Expired - Fee Related CN100352990C (en) | 2001-09-21 | 2001-09-21 | Process and for producing Jinlun Non-wowen cloth by spinning-bonding method its device and jinlun non-woven cloth products |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101836775A (en) * | 2010-05-28 | 2010-09-22 | 苏州荣夏远纺织染整有限公司 | Method for producing simulation plants by utilizing non-woven cloth |
| CN103132248B (en) * | 2011-11-24 | 2015-06-24 | 佛山市斯乐普特种材料有限公司 | Manufacturing equipment for elastic spun-bonded nonwovens and method for elastic spun-bonded nonwovens |
| CN102776710A (en) * | 2012-05-24 | 2012-11-14 | 温州博益机械有限公司 | Nylon spun-bonded filament non-woven fabric and preparation method thereof |
| CN102787449A (en) * | 2012-07-25 | 2012-11-21 | 浙江华昊化纤塑业有限公司 | Method for producing non-woven fabric |
| CN103653459A (en) * | 2013-12-10 | 2014-03-26 | 吴江市品信纺织科技有限公司 | Wear-proof non-woven fabric |
| CN104452111A (en) * | 2014-12-01 | 2015-03-25 | 柳州市威腾汽车配件厂 | Method for preparing spun-bonded non-woven cloth |
| CN108179550B (en) * | 2018-03-13 | 2020-09-08 | 苏州多瑈新材料科技有限公司 | Super-soft fluffy light filament non-woven composite material and preparation method thereof |
| CN109371574A (en) * | 2018-05-04 | 2019-02-22 | 广东协宏无纺布科技有限公司 | A kind of spun-bonded needle punched non-woven fabrics |
| TW202146719A (en) * | 2020-02-24 | 2021-12-16 | 奧地利商蘭仁股份有限公司 | Process for the production of spunbonded nonwoven |
| CN114232210B (en) * | 2021-11-18 | 2023-04-21 | 中原工学院 | Melt-blown medical protective material with typha vein structure, and preparation method and application thereof |
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|---|---|---|---|---|
| US4627811A (en) * | 1984-01-19 | 1986-12-09 | Hoechst Aktiengesellschaft | Apparatus for producing a spunbond |
| US5470639A (en) * | 1992-02-03 | 1995-11-28 | Fiberweb North America, Inc. | Elastic nonwoven webs and method of making same |
| JPH0849166A (en) * | 1994-08-01 | 1996-02-20 | Chisso Corp | Polypropylene fiber |
| US5688468A (en) * | 1994-12-15 | 1997-11-18 | Ason Engineering, Inc. | Process for producing non-woven webs |
| JP2001248055A (en) * | 2000-02-29 | 2001-09-14 | Idemitsu Petrochem Co Ltd | Method for producing spunbonded elastic nonwoven fabric |
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2001
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4627811A (en) * | 1984-01-19 | 1986-12-09 | Hoechst Aktiengesellschaft | Apparatus for producing a spunbond |
| US5470639A (en) * | 1992-02-03 | 1995-11-28 | Fiberweb North America, Inc. | Elastic nonwoven webs and method of making same |
| JPH0849166A (en) * | 1994-08-01 | 1996-02-20 | Chisso Corp | Polypropylene fiber |
| US5688468A (en) * | 1994-12-15 | 1997-11-18 | Ason Engineering, Inc. | Process for producing non-woven webs |
| JP2001248055A (en) * | 2000-02-29 | 2001-09-14 | Idemitsu Petrochem Co Ltd | Method for producing spunbonded elastic nonwoven fabric |
Non-Patent Citations (2)
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