CN1445390A - Method and equipment for making elastic nonwovens from polyurethane by melting and jetting material to form mesh - Google Patents
Method and equipment for making elastic nonwovens from polyurethane by melting and jetting material to form mesh Download PDFInfo
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- CN1445390A CN1445390A CN 03116761 CN03116761A CN1445390A CN 1445390 A CN1445390 A CN 1445390A CN 03116761 CN03116761 CN 03116761 CN 03116761 A CN03116761 A CN 03116761A CN 1445390 A CN1445390 A CN 1445390A
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- polyurethane
- melt
- nonwoven fabric
- thermoplastic polyurethane
- spinneret orifice
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Abstract
A method and apparatus for preparing non-woven elastic polyurethane fabric by melt blowing method is disclosed. Its advantages are simple method and apparatus and short technological process. The resultant non-woven fabric features fine denier, large specific surface area, and good softness, elasticity and comfortable feeling.
Description
Technical field
The present invention relates to a kind of preparation method and device of nonwoven fabric, particularly a kind of melt blown webbing is made the method and apparatus of elastic polyurethane nonwoven fabric.
Background technology
The melt blown webbing method is that extruded polymer is into the net a kind of, its technological principle is that the polymer melt that will extrude forms superfine staple fibre by thermal air current at a high speed or other means (for example centrifugal force, electrostatic force etc.), and agglomerating to perforated cylinder or curtain is online, bonding or heat bonding is reinforced and is made nonwoven fabric by self.It is the nonwoven fabric manufacturing of raw material that present this method has been widely used in thermoplastic resins such as polypropylene, polyester.Because poor flexibility, the Boardy Feeling of nonwoven fabric such as polypropylene, polyester, be restricted in the application of field of textiles.The present invention is raw material with the Polyurethane Thermoplastic Elastomer, has the elastic polyurethane nonwoven fabric of favorable elasticity by the meltblown manufacturing.At present domestic patent and the research report that does not still have this aspect.This method equipment is simple, and technological process is short, reduced investment, and also fibre number is thin, and structure is fluffy, and specific area is big, and flexibility is good, will be widely used at field of textiles.The flow process of this method and process conditions will directly influence the quality and the application of nonwoven fabric.
Summary of the invention
The technical issues that need to address of the present invention are to disclose the method and apparatus that a kind of melt blown webbing is made the elastic polyurethane nonwoven fabric, with defectives such as the poor flexibility that overcomes nonwoven fabric such as polypropylene that prior art makes, polyester, Boardy Feelings.
Method of the present invention comprises the steps:
With the thermoplastic polyurethane particle through screw extruder heating, fusion, be squeezed into melt, when melt when the spinneret orifice of die head is extruded, be subjected to the winding-up of spinneret orifice two side hot high pressure air-flows, melt is drawn into superfine fibre, autoadhesion forms the elastic polyurethane nonwoven fabric.
According to optimized technical scheme of the present invention, can be 65～100 thermoplastic polyurethane particle with hardness (Shao A), 80～120 ℃ of following vacuumizes 8～24 hours, remove the moisture in the particle, make the moisture content＜100PPM of particle;
In dried polyurethane particles feeding screw extruder, under 180～260 ℃ through the heating, fusion, be squeezed into melt, the flow velocity of melt is 0.5～5g/min, extrude from the spinneret orifice of die head, by spinneret orifice both sides flow velocity is 50～300m/sec, temperature is the winding-up of 280～500 ℃ thermal current, under the effect of strong high speed thermal current, melt is stretched and forms fiber number is 0.1～400 μ m superfine fibre, superfine fibre is subjected to the cooling of surrounding air, condensing upon from the shower nozzle distance is on the drum receiver at 5～35cm place, and autoadhesion forms elastic polyurethane nonwoven fabric of the present invention.
The thermoplastic polyurethane particle of being addressed comprises polyester-type and/or polyurethane and/or polyether-type (polytetramethylene butanediol ethere) polyurethane;
The polyester-type of being addressed comprises a kind of in poly-adipate glycol-propylene glycol ester, poly adipate succinic acid ester, the polycaprolactone;
The hardness of thermoplastic polyurethane (Shao A) is 65～100, and mean molecule quantity is 50000～750000;
The device that is used to implement the inventive method is a batch (-type) melt blown webbing equipment, comprises thermoplastic polyurethane transport system and air flow jetting system.
Method of the present invention compared with prior art has very significant advantage, equipment is simple, technological process is short, the fiber number of the elastic non-woven cloth of made is thin, specific area is big, flexibility is good, comfort is strong, and the vertical, horizontal elastic elongation can reach more than 200%, and poisture-penetrability can reach 650g/m
2.day.Can be widely used in the fields such as making, dress ornament and packing of clothes, bio-medical, corrosion-resistant filtering material.Have development prospect, a preparation method of high value added product for a kind of.
The specific embodiment
Embodiment 1
With 5 kilograms of hardness (Shao A) is 70 EU particle, and mean molecule quantity is 50000,80 ℃ of following vacuumizes 16 hours, makes the moisture content＜100PPM of particle.
Polyurethane particles after vacuumize feeding diameter is 45mm, and draw ratio is 24: 1, and compression ratio is that the temperature of melt is 200 ℃ in 3: 1 the screw extruder, makes that particle fully heats, fusion.
Polyurethane melt after the fusion comes out from screw extruder, is 300mm through width, and the spinneret orifice hole count is 200, and the aperture is the die head of 0.25mm, extrudes from the spinneret orifice of die head, and the flowing velocity of polyurethane melt is 1g/min.
When melt was extruded from spinneret orifice, being subjected to spinneret orifice both sides gas flow temperature was 270 ℃, and speed is the hot high pressure air-flow winding-up of 150m/sec, and the polyurethane melt is drawn as the superfine fibre of 10～200 μ m.
Superfine fibre is through the cooling of surrounding air, and condensing upon from the die head distance is on the drum receiver of 10cm, and autoadhesion forms the elastic polyurethane nonwoven fabric.
The cooling back is cut elastic non-woven cloth with blade and has been torn, and 60min then finalizes the design in 90 ℃ baking oven.
The mechanical property and the poisture-penetrability of table 1 EU elastic non-woven cloth
Longitudinal strength longitudinal extension rate transverse strength horizontal expansion rate poisture-penetrability
/MPa (％) /MPa (％) (g/m
2.day)
10.32 317 5.43 258 751
Embodiment 2
With 5 kilograms of hardness (Shao A) is 95 PAUR particle, and mean molecule quantity is 70000,100 ℃ of following vacuumizes 16 hours, makes the moisture content＜100PPM of particle.
Polyurethane particles after vacuumize feeding diameter is 45mm, and draw ratio is 24: 1, and compression ratio is that the temperature of melt is 220～260 ℃ in 3: 1 the screw extruder, makes that particle fully heats, fusion.
Polyurethane melt after the fusion comes out from screw extruder, is 300mm through width, and the spinneret orifice hole count is 200, and the aperture is the die head of 0.25mm, extrudes from the spinneret orifice of die head, and the flowing velocity of polyurethane melt is 2g/min.
When melt was extruded from spinneret orifice, being subjected to spinneret orifice both sides gas flow temperature was 400 ℃, and speed is the hot high pressure air-flow winding-up of 450m/sec, and the polyurethane melt is drawn as the superfine fibre of 10～200 μ m.
Superfine fibre is through the cooling of surrounding air, and condensing upon from the die head distance is on the drum receiver of 30cm, and autoadhesion forms the elastic polyurethane nonwoven fabric.
The cooling back is cut elastic non-woven cloth with blade and has been torn, and 60min then finalizes the design in 110 ℃ baking oven.
The mechanical property and the poisture-penetrability of table 2 PAUR elastic non-woven cloth
Longitudinal strength longitudinal extension rate transverse strength horizontal expansion rate poisture-penetrability
/MPa (％) /MPa (％) (g/m
2.day)
5.00 280 2.24 213 690
Claims (10)
1. the method for a melt blown webbing manufacturing elastic polyurethane nonwoven fabric is characterized in that comprising the steps:
Polyurethane particles is fed in the screw extruder, under 180～260 ℃ through heating, after the fusion, extrude, by the winding-up of the thermal current of spinneret orifice both sides from the spinneret orifice of die head, the melt formation superfine fibre that is stretched, autoadhesion forms elastic polyurethane nonwoven fabric of the present invention.
2. method according to claim 1 is characterized in that, the thermoplastic polyurethane particle of being addressed comprises PAUR and/or polyether-type (polytetramethylene butanediol ethere) polyurethane.
3. method according to claim 2 is characterized in that, said polyester-type comprises a kind of in poly-adipate glycol one propylene glycol ester, poly adipate succinic acid ester, the polycaprolactone.
4. method according to claim 1 is characterized in that, the hardness of thermoplastic polyurethane (Shao A) is 65～100.
5. method according to claim 1 is characterized in that, the mean molecule quantity of thermoplastic polyurethane is 50000～750000.
6. method according to claim 1 is characterized in that, melt temperature is 180～260 ℃, and the flow velocity of melt is 0.5～5g/min.
7. method according to claim 1 is characterized in that, the thermal current flow velocity is that 50～300m/sec, temperature are 280～500 ℃.
8. method according to claim 1 is characterized in that, the distance between die head and the receiving system is 5～35cm.
9. method according to claim 1 is characterized in that, the diameter of meltblown fibers is 0.1～400 μ m superfine fibre.
10. be used to realize the device of the inventive method, it is characterized in that being batch (-type) melt blown webbing equipment, comprise thermoplastic polyurethane transport system and air flow jetting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116761 CN1445390A (en) | 2003-05-06 | 2003-05-06 | Method and equipment for making elastic nonwovens from polyurethane by melting and jetting material to form mesh |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03116761 CN1445390A (en) | 2003-05-06 | 2003-05-06 | Method and equipment for making elastic nonwovens from polyurethane by melting and jetting material to form mesh |
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| CN1445390A true CN1445390A (en) | 2003-10-01 |
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| CN 03116761 Pending CN1445390A (en) | 2003-05-06 | 2003-05-06 | Method and equipment for making elastic nonwovens from polyurethane by melting and jetting material to form mesh |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101432478B (en) * | 2006-05-31 | 2012-01-04 | 三井化学株式会社 | Non-woven fabric laminate and method for production thereof |
| CN102504189A (en) * | 2011-11-08 | 2012-06-20 | 旭川化学（苏州）有限公司 | Polyurethane for high-resilience clothing leather and preparation method thereof |
| CN109316827A (en) * | 2018-10-17 | 2019-02-12 | 江苏氟莱尔环保科技有限公司 | A kind of filter cloth and its manufacturing method comprising nonwoven layer |
| CN109868556A (en) * | 2019-01-07 | 2019-06-11 | 安徽新利清洁用品有限公司 | A kind of corrosion-resistant non-woven bag and preparation method thereof |
| CN111472180A (en) * | 2020-05-15 | 2020-07-31 | 浙江金三发粘合衬有限公司 | Adhesive interlining based on TPU (thermoplastic polyurethane) non-woven fabric, preparation method and application |
| CN117552183A (en) * | 2023-10-31 | 2024-02-13 | 黄河三角洲京博化工研究院有限公司 | Elastic non-woven fabric and manufacturing process and application thereof |
-
2003
- 2003-05-06 CN CN 03116761 patent/CN1445390A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101432478B (en) * | 2006-05-31 | 2012-01-04 | 三井化学株式会社 | Non-woven fabric laminate and method for production thereof |
| CN102504189A (en) * | 2011-11-08 | 2012-06-20 | 旭川化学（苏州）有限公司 | Polyurethane for high-resilience clothing leather and preparation method thereof |
| CN102504189B (en) * | 2011-11-08 | 2013-06-05 | 旭川化学（苏州）有限公司 | Polyurethane for high-resilience clothing leather and preparation method thereof |
| CN109316827A (en) * | 2018-10-17 | 2019-02-12 | 江苏氟莱尔环保科技有限公司 | A kind of filter cloth and its manufacturing method comprising nonwoven layer |
| CN109868556A (en) * | 2019-01-07 | 2019-06-11 | 安徽新利清洁用品有限公司 | A kind of corrosion-resistant non-woven bag and preparation method thereof |
| CN111472180A (en) * | 2020-05-15 | 2020-07-31 | 浙江金三发粘合衬有限公司 | Adhesive interlining based on TPU (thermoplastic polyurethane) non-woven fabric, preparation method and application |
| CN111472180B (en) * | 2020-05-15 | 2022-04-15 | 浙江金三发粘合衬有限公司 | Adhesive interlining based on TPU (thermoplastic polyurethane) non-woven fabric, preparation method and application |
| CN117552183A (en) * | 2023-10-31 | 2024-02-13 | 黄河三角洲京博化工研究院有限公司 | Elastic non-woven fabric and manufacturing process and application thereof |
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