CN101498079B - 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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- CN101498079B CN101498079B CN200810005246A CN200810005246A CN101498079B CN 101498079 B CN101498079 B CN 101498079B CN 200810005246 A CN200810005246 A CN 200810005246A CN 200810005246 A CN200810005246 A CN 200810005246A CN 101498079 B CN101498079 B CN 101498079B
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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 manufacturing approach thereof.Specifically, relate to polyester tubular filament spinning type nonwoven fabric and the manufacturing approach 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, through multistep technology and processing cost is high.
And nonwoven fabric of long fibers can not be applicable to the hollow shower nozzle that forms doughnut, thus the tubular filament nonwoven fabric can not be provided.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 are high.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 manufacturing approach " 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 or these fusing points more than 100 ℃ is 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 the raw material that therefore 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 the method that addresses the above problem and accomplished 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 manufacturing approach 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, the heat conductivity that improves self is provided and thermal fluidity is low, the tubular filament nonwoven fabric of raising heat insulating ability and sound absorption properties.
To achieve these goals; The present invention provides a kind of manufacturing approach 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 heat is pasted or the step of the filament web that acupuncture as above builds up.
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 through 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.If when using intrinsic viscosity (IV) to be the polyester slice below 0.60, can reduce the intensity of nonwoven fabric.On the contrary, when using intrinsic viscosity (IV) to be the polyester slice more than 0.70, spinning has 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 through 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 through these is that 0.1 gram/minute hole (g/min.hole) is to 25 gram/minute holes.At this moment, considered cooling effectiveness during the quantity of spinneret orifice in the design sprinkler.Shower nozzle shape considered cooling blast and the slit clearance portion of not handling up, promptly the polymer bonding part is designed to circle or ellipse for the cross section is smooth.The shower nozzle backside pressure that the gap width considered is suitable, 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.The slit is the considered cooling blast also, 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 through 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 through 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, press certain angle and speed and disperse this filament.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 the shower nozzle of handling up., carry out heat and paste or acupuncture, thereby make in order to give definite shape, physical characteristic etc. like the net of above-mentioned formation 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
Combined to consider the hollow shower nozzle of 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, through 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 through 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 like 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 the 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 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]
| Project | Weight | Thickness | Filament diameter | Intensity (kg/cm 2) | Percentage elongation (%) | Hollow rate | ||
| gsm | mm | (um) | MD | CD | MD | CD | ％ | |
| Embodiment 1 | 140 | 1.71 | 24.6 | 59.1 | 36.6 | 71 | 85 | 25 |
| Embodiment 2 | 170 | 2.12 | 24.8 | 75.1 | 43.7 | 69 | 81 | 23 |
| Comparative example 1 | 140 | 1.37 | 21.5 | 59.1 | 35.1 | 67 | 79 | - |
| Comparative example 2 | 170 | 1.64 | 21.7 | 75.1 | 44.1 | 69 | 80 | - |
Industrial applicability
Make as during the polyester tubular filament spinning type nonwoven fabric of the present invention of above-mentioned composition, use the hollow shower nozzle to form net, and make their,, thereby make the hollow type nonwoven fabric again with its heat bonding or acupuncture through after calender by suitable spinning condition.
Nonwoven fabric constructed in accordance has outstanding heat insulating ability and thickness sense and fluffy sense, has improved thermal insulation and sound absorption properties etc. greatly.And, compare with the production of the polyester doughnut that carries out with existing filament, simplify technology greatly and reduced cost.
Claims (3)
1. the manufacturing approach 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; Spinneret orifice slit quantity in the spinning head of wherein said hollow shower nozzle is 2 to 4, and the width in slit is 0.05 to 0.3mm, and the slit spacing is 0.05 to 0.3mm; The slit internal diameter is 0.4 to 1.2mm; Shower nozzle micropore length is 0.1 to 1.0mm, and it is that 0.60 to 0.70 polyester is made that described nonwoven fabric is to use intrinsic viscosity, and the spinneret orifice handling capacity of described spinning head is gram/minute hole, 0.1 gram/minute hole to 25;
On the conveyer belt that moves continuously, build up the step of the filamentary net of as above making of polyester; And
Heat is pasted or the step of the filament web that acupuncture as above builds up.
2. according to the manufacturing approach 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.
3. the manufacturing approach of polyester tubular filament spinning type nonwoven fabric according to claim 1 and 2; 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 CN101498079A (en) | 2009-08-05 |
| CN101498079B true CN101498079B (en) | 2012-10-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016100057A1 (en) * | 2014-12-19 | 2016-06-23 | Kimberly-Clark Worldwide, Inc. | Fine hollow fibers having a high void fraction |
| KR102128597B1 (en) * | 2017-09-15 | 2020-06-30 | 주식회사 엘지화학 | Assessment method for melt blown property of plastic form |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2008
- 2008-01-31 CN CN200810005246A patent/CN101498079B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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