CN101498079A - Polyester hollow filament spinning type nonwoven fabric and manufacturing method thereof - Google Patents
Polyester hollow filament spinning type nonwoven fabric and manufacturing method thereof Download PDFInfo
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- CN101498079A CN101498079A CNA2008100052462A CN200810005246A CN101498079A CN 101498079 A CN101498079 A CN 101498079A CN A2008100052462 A CNA2008100052462 A CN A2008100052462A CN 200810005246 A CN200810005246 A CN 200810005246A CN 101498079 A CN101498079 A CN 101498079A
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Abstract
The invention relates to a polyester hollow filament spinning non-woven fabric and a manufacture method thereof, in particular to a polyester hollow filament non-woven fabric and a manufacture method thereof. The polyester hollow filament non-woven fabric uses a hollow nozzle to increase the thickness sense, the insulation, the sound-absorbing property, and the like of the non-woven fabric when polyester long-fiber non-woven fabric is manufactured. The method comprises the following steps: using the hollow nozzle to stretch polyester according to a hollow spinning shape to manufacture polyester single fibers with the diameter of 10 micron to 80 micron; stacking a net of the polyester single fibers on a continuously moving conveyer belt; and thermally pasting or prickling the stacked single fiber net. The invention uses the hollow nozzle to form the net according to suitable spinning conditions when the polyester hollow filament spinning non-woven fabric is manufactured so as to have superior insulation, thickness sense and fluffy sense, not only greatly improves the adiabaticty, the sound-absorbing property, and the like, but also greatly simplifies the technology and decreases the cost as compared with the prior polyester hollow fiber production by single fibers.
Description
Technical field
The present invention relates to polyester tubular filament spinning type nonwoven fabric and manufacture method thereof.Specifically, relate to polyester tubular filament spinning type nonwoven fabric and the manufacture method thereof of using the hollow shower nozzle when making the polyester nonwoven fabric of long fibers and increasing nonwoven thickness sense, heat insulating ability, sound absorption properties etc.
Background technology
Doughnut nonwoven fabric is to use the filament nonwoven fabric in the past.After so filament nonwoven fabric process brush comb length is 20 to 100mm filamentary technologies, carry out the combination of machinery or heat, so its productivity is low.And, pass through multistep technology and the processing cost height.
And nonwoven fabric of long fibers can not be applicable to the hollow shower nozzle that forms doughnut, can not provide the tubular filament nonwoven fabric thus.Therefore, the polyester needle punched non-woven fabrics as uses such as insulation materials in construction material does not comprise air as above-mentioned non-hollow type nonwoven fabric of long fibers, so heat conductivity and thermal fluidity height.But, heat insulating ability difference and reduction sound absorption properties etc.
On the other hand, name is called the Korea S 1996-0042661 patent application of " nonwoven fabric of long fibers and manufacture method " and has described the nonwoven fabric of long fibers of being made up of polylactic acid polymer, it is characterized in that: polylactic acid polymer is from the copolymer by polyethylene (D-lactic acid), polyethylene (L-lactic acid), D-lactic acid, L-lactic acid, the copolymer of D-lactic acid and hydroxycarboxylic acid, and the fusing point of selecting in the group that constitutes of the copolymer of L-lactic acid and hydroxycarboxylic acid is that polymer more than 100 ℃ or these fusing points are the above-mentioned mixture of polymers more than 100 ℃.Above-mentioned long stapled cross section is a different shape, has described hollow type as an example wherein.But the main purpose of foregoing invention is for giving Biodegradable, and therefore the raw material that uses is defined as foregoing.And, problem that exists when not describing the hollow type nonwoven fabric of long fibers of making the accompanying drawing example and the method that solves these etc.
Therefore, present inventor etc. adjust the research of creating conditions of various nonwoven fabric for the function problem of the heat insulating ability of above-mentioned the past nonwoven fabric of long fibers and sound absorption properties difference etc., and the result has obtained solution to the problems described above and finished the present invention.
Summary of the invention
Therefore, the object of the present invention is to provide to solve as the problem of above-mentioned traditional nonwoven fabric of long fibers, go up at streamline (In-Line) and produce polyester hollow nonwoven fabric and shorten technology, but and the manufacture method of the tubular filament nonwoven fabric of high-speed production.
Another object of the present invention is to improve the shortcoming of above-mentioned traditional polyester long fiber spun-bonded non-woven fabrics, provide the heat conductivity that improves self and thermal fluidity is low, improve the tubular filament nonwoven fabric of heat insulating ability and sound absorption properties.
To achieve these goals, the invention provides a kind of manufacture method of polyester tubular filament spinning type nonwoven fabric, it is characterized in that this method comprise use the hollow shower nozzle with polyester by the hollow shape spin-drawing, making diameter is the filamentary step of polyester of 10 to 80 μ m; On the conveyer belt that moves continuously, build up the step of the filamentary net of as above making of polyester; And the step of the filament web that as above builds up of hot sticky subsides or acupuncture.
Other scheme of the present invention is characterised in that: the spinneret orifice slit quantity in the spinning head of above-mentioned hollow shower nozzle is 2 to 4, the width in its slit (a) is 0.05 to 0.3mm, slit spacing (b) is 0.05 to 0.3mm, slit internal diameter (ID) is 0.4 to 1.2mm, and shower nozzle micropore length (capillary length) is 0.1 to 1.0mm.
Other scheme of the present invention is characterised in that: it is that 0.60 to 0.70 polyester is made that above-mentioned nonwoven fabric is to use intrinsic viscosity (IV).
Other scheme of the present invention is characterised in that: the spinneret orifice handling capacity by above-mentioned spinning head is gram/minute hole, 0.1 gram/minute hole to 25.
Other scheme of the present invention is characterised in that: the cross sectional shape of above-mentioned spinning head is for circular or oval.
In order to realize above-mentioned purpose and other purpose, polyester tubular filament spinning type nonwoven fabric of the present invention is characterised in that: comprise that diameter is 10 to 80 μ m, thickness, area hollow rate thicker more than 10% than circular cross-section fiber is the doughnut more than 10% under identical weight.
Description of drawings
Fig. 1 is the sectional view of spinneret orifice in the spinning head that uses when making according to polyester tubular filament nonwoven fabric of the present invention.
Fig. 2 is the SEM photo in polyester tubular filament nonwoven fabric cross section constructed in accordance.
Fig. 3 is the thickness photo relatively when pushing down the nonwoven fabric of identical weight with same load.
The specific embodiment
Below, illustrate in greater detail the present invention with reference to accompanying drawing according to embodiment.
Fig. 1 is the sectional view of spinneret orifice in the spinning head that uses when making according to polyester tubular filament nonwoven fabric of the present invention.Fig. 2 is the SEM photo in polyester tubular filament nonwoven fabric cross section constructed in accordance.Fig. 3 is the thickness photo relatively when pushing down the nonwoven fabric of identical weight with same load.
Nonwoven fabric according to the present invention is 0.60 to 0.70 with intrinsic viscosity (IV) on drying machine, and being preferably 0.62 to 0.68 polyester slice crystallization and being dried to moisture is 100ppm, is preferably below the 50ppm.When if to use intrinsic viscosity (IV) be polyester slice below 0.60, can reduce the intensity of nonwoven fabric.On the contrary, when to use intrinsic viscosity (IV) be polyester slice more than 0.70, spinning had some setbacks and can not high-speed production.
Above-mentioned crystallization and dry section at 270 to 320 ℃, are preferably in the extruder of 280 to 295 ℃ of temperature after the fusing, as shown in Figure 1 by the spinning of hollow shower nozzle.
The hollow shower nozzle shown in Fig. 1 preferably in the spinning head spinneret orifice slit quantity be two to four.Using its gap width (a) is 0.05 to 0.3mm, and slit spacing (b) is 0.05 to 0.3mm, and slit internal diameter (ID) is 0.4 to 1.2mm, and shower nozzle micropore length is 0.1 to 1.0mm, and the spinneret orifice quantity in the spinning head is 1 to 600 spinning head.The handling capacity of spinneret orifice by these is that 0.1 gram/minute hole (g/min.hole) is to 25 gram/minute holes.At this moment, should consider cooling effectiveness during the quantity of spinneret orifice in the design sprinkler.The slit clearance portion that the shower nozzle shape should be considered cooling blast and not handle up, promptly the polymer bonding part is designed to circle or ellipse for the cross section is smooth.Gap width should be considered suitable shower nozzle backside pressure, and polymer is detained on shower plate top when too wide, and flows to inhomogeneous and the spinning problem that fractures takes place.When too narrow and backside pressure was raised, shower nozzle was impaired.Cooling blast also should be considered in the slit, and the cross section is inhomogeneous because of extruding the expansion cross section when too narrow.Can not form hollow when too narrow.
The polymer of spinning preferably by 10 to 25 ℃ that spray by cellular chamber, is preferably 15 to 20 ℃ cooling air cooling curing.Cooling air wind speed 10m/min to 45m/min is for well.Be preferably 25m/min to 35m/min.Pressing by air is 2 to 10kg/cm
2, be preferably 4 to 6kg/cm
2Ejector with the cooling polymer be drawn into filament.
Each single fiber diameter is 10 to 80 μ m, or 20 to 40 μ m are preferably 25 to 40 μ m for well.On the conflict dish, disperse this filament by certain angle and speed.Utilize the inhalation device of bottom on the conveyer belt that moves, to build up net equably.The basis weight of above-mentioned net is according to hole number, handling capacity, the adjustment of flat rubber belting speed of handling up shower nozzle.In order to give definite shape, physical characteristic etc., carry out hot sticky subsides or acupuncture as the net of above-mentioned formation, thereby make according to nonwoven fabric of the present invention.
Below, illustrate in greater detail the present invention according to embodiment, but scope of the present invention is not limited to these embodiment.
Embodiment 1 to embodiment 2
Combine the hollow shower nozzle of considering stretching, back side pressure, hollow rate etc. on the common spunbond polyester nonwoven production equipment.After dry intrinsic viscosity is 0.65 polyester slice and crystallization on drying machine, be fed to extruder.Section without interruption after the high temperature extruder melts, mixes, by the per minute spinning 1.7 of hollow shower nozzle hole to 2.8g.With the cooling air cooling of cooling chamber supply and solidify filament, prevent bonding between the filament.Pressing by air is 4 to 5kg/cm
2Ejector, the stretching filament is also given the filament characteristic.
In order to form net, on the conflict dish, press the above-mentioned filament of certain speed and angular separation.Utilize the suction apparatus of bottom on the conveyer belt that moves continuously, to build up net equably.At this moment, the speed of conveyer belt for about per minute 14 to 20m.For fixed network, the calendering temperature is about 165 ℃, and line pressure is about 60kg/cm.In order to give shape stability and physical property on the net, manufacture as the weight of table 1 and the nonwoven fabric of thickness after the acupuncture.Measure the nonwoven fabric characteristic of so making, its result is illustrated in the table 1.Nonwoven fabric hollow rate according to the present embodiment manufacturing as described in Table 1 is 23 to 25%, and thickness increases by 25 to 32%, and heat insulating ability and sound absorption properties are very outstanding.
And Fig. 2 has shown the section S EM photo of the polyester tubular filament nonwoven fabric of producing with this result.Poor for relatively tubular filament nonwoven fabric and single nonwoven fabric of long fibers thickness shown thickness photo relatively when pushing down the nonwoven fabric of making according to embodiment 1 and comparative example 1 with same load at Fig. 3.
Comparative example 1 is to comparative example 2
Except not using the hollow shower nozzle, and use beyond existing single shower nozzle, utilize polymer same as the previously described embodiments, and by condition manufacturing such as the identical weight of following table 1 and the nonwoven fabric of thickness identical with embodiment.Measure the nonwoven fabric characteristic of so making, its result is illustrated in as in the following table 1.
[table 1]
Industrial applicability
Make as during the polyester hollow filament spinning type nonwoven fabric of the present invention of above-mentioned composition, make Form net with the hollow shower nozzle by suitable spinning condition, and make their through calender it After, again with its heat bonding or acupuncture, thereby make the hollow type nonwoven.
Nonwoven constructed in accordance has outstanding heat insulating ability and thickness sense and fluffy Sense has improved thermal insulation and sound-absorbing etc. greatly. And, and advance with existing ultimate fibre The production of the polyester doughnut of row is compared, and has greatly simplified technology and has reduced cost.
Claims (6)
1. the manufacture method of polyester tubular filament spinning type nonwoven fabric is characterized in that this method comprises:
Use the hollow shower nozzle that polyester is pressed the hollow shape spin-drawing, making diameter is the filamentary step of polyester of 10 to 80 μ m;
On the conveyer belt that moves continuously, build up the step of the filamentary net of as above making of polyester; And
The step of the filament web that hot sticky subsides or acupuncture as above build up.
2. according to the manufacture method of the polyester tubular filament spinning type nonwoven fabric of claim 1, it is characterized in that, spinneret orifice slit quantity in the spinning head of above-mentioned hollow shower nozzle is 2 to 4, the width in slit is 0.05 to 0.3mm, the slit spacing is 0.05 to 0.3mm, the slit internal diameter is 0.4 to 1.2mm, and shower nozzle micropore length is 0.1 to 1.0mm.
3. according to the manufacture method of the polyester tubular filament spinning type nonwoven fabric of claim 1, it is characterized in that it is that 0.60 to 0.70 polyester is made that above-mentioned nonwoven fabric is to use intrinsic viscosity.
4. according to the manufacture method of the polyester tubular filament spinning type nonwoven fabric of claim 1, it is characterized in that the spinneret orifice handling capacity by above-mentioned spinning head is gram/minute hole, 0.1 gram/minute hole to 25.
5. according to the manufacture method of the polyester tubular filament spinning type nonwoven fabric of claim 1, it is characterized in that the cross sectional shape of above-mentioned spinning head is circular or oval.
6. according to the manufacture method of each polyester tubular filament spinning type nonwoven fabric in the claim 1～5, it is characterized in that, comprise that diameter is 10 to 80 μ m, thickness, area hollow rate thicker more than 10% than circular cross-section fiber is the doughnut more than 10% under identical weight.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810005246A CN101498079B (en) | 2008-01-31 | 2008-01-31 | Polyester hollow filament spinning type nonwoven fabric and manufacturing method thereof |
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| CN200810005246A CN101498079B (en) | 2008-01-31 | 2008-01-31 | Polyester hollow filament spinning type nonwoven fabric and manufacturing method thereof |
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| CN101498079A true CN101498079A (en) | 2009-08-05 |
| CN101498079B CN101498079B (en) | 2012-10-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002294A (en) * | 2014-12-19 | 2017-08-01 | 金伯利-克拉克环球有限公司 | Detail hollow fiber with high voidage |
| CN111133520A (en) * | 2017-09-15 | 2020-05-08 | Lg化学株式会社 | Method for evaluating properties of melt-blown plastic resins |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1124793A (en) * | 1994-12-16 | 1996-06-19 | 段士钰 | Bluish dogbane medical cotton, adhesive sprayed cotton and non-woven cloth |
| CN1370873A (en) * | 2002-03-18 | 2002-09-25 | 王伟春 | Fine-denier and superfine-denier Dacron fiber blanket and its production process |
| CN1861871A (en) * | 2006-06-13 | 2006-11-15 | 孙友林 | Down imitating cotton and mfg. method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107002294A (en) * | 2014-12-19 | 2017-08-01 | 金伯利-克拉克环球有限公司 | Detail hollow fiber with high voidage |
| CN111133520A (en) * | 2017-09-15 | 2020-05-08 | Lg化学株式会社 | Method for evaluating properties of melt-blown plastic resins |
| CN111133520B (en) * | 2017-09-15 | 2023-07-07 | Lg化学株式会社 | Method for evaluating properties of melt blown plastic resins |
| US11913923B2 (en) | 2017-09-15 | 2024-02-27 | Lg Chem, Ltd. | Method for evaluating properties of melt-blown plastic resin |
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| CN101498079B (en) | 2012-10-03 |
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