CN103380242A - Melt-blown nonwoven fabric comprising ultra-fine fibers, production method therefor, and device for producing same - Google Patents
Melt-blown nonwoven fabric comprising ultra-fine fibers, production method therefor, and device for producing same Download PDFInfo
- Publication number
- CN103380242A CN103380242A CN201280006732.0A CN201280006732A CN103380242A CN 103380242 A CN103380242 A CN 103380242A CN 201280006732 A CN201280006732 A CN 201280006732A CN 103380242 A CN103380242 A CN 103380242A
- Authority
- CN
- China
- Prior art keywords
- woven fabrics
- attraction
- spraying non
- melt spraying
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
An ultra-fine fiber melt-blown nonwoven fabric having excellent fine-particle trapping characteristics and air permeability is obtained by a melt-blowing method using: a die (1) having a plurality of ultra-fine spinning nozzles and an air nozzle; a rotating suction roll (2) having a porous outer peripheral surface and which sucks from the inside thereof; and a pair of upper and lower suction hoods (3a, 3b) covering the suction roll (2). In said melt-blow method: the interval between the die (1) and the suction roll (2) is set such that polymer fiber breakage or twisting is suppressed, within a range wherein the stretching of a molten polymer is completed and vibration of the obtained polymer fiber substantially does not occur; and the intervals between the outer peripheral surface of the suction roll (2) and the die-side end section of suction hoods (3a, 3b) are set such that fibers that have broken and attached or fused to the surface of the melt-blown nonwoven fabric can be removed by suction.
Description
Technical field
Even the present invention relates to suppress Filament-wound Machine and floating fiber adhere to the little maximum fine pore of cloth density (order is paid) and average fine pore is also little and particulate catch property and aeration both sides all the excellent melt spraying non-woven fabrics that is consisted of by superfine fibre, this melt spraying non-woven fabrics manufacture method and for the manufacture of the device of this melt spraying non-woven fabrics.
Background technology
Melt spraying non-woven fabrics consists of by compare superfine fiber with spun-bonded non-woven fabrics, so particulate seizure property is excellent, is used for liquid filter, pneumatic filter etc., and because the retentivity of interelectrode insulating properties, electrolyte is excellent, also is used for battery separator etc.Melt spraying non-woven fabrics consists of such as the polyolefin by excellences such as processability, resistances to chemical reagents, but in order further to improve micro particle catching, seeks the reduction of further superfineization and maximum fine pore and the average fine pore of polyamide fiber.
The manufacture method of the melt index of 230 ℃ of temperature and load 2.16kg being carried out melt spraying non-woven fabrics that spinning forms, that be made of the little polypropylene superfine fibre of the fibre diameter rate of change as 500～2,000g/10 minute polypropylene take 200～285 ℃ nozzle temperature is disclosed for Japanese kokai publication hei 6-25958 number.Disclose for TOHKEMY 2002-201560 number by the moving speed of melt be more than 1,200g/10 minute, molecular weight distribution (Mw/Mn) is that polypropylene 2.5 below consists of, fiber diameter is the manufacture method of the melt spraying non-woven fabrics of the superfine fibre below the 2.0 μ m.But, the method of Japanese kokai publication hei 6-25958 number and TOHKEMY 2002-201560 number record can not fully prevent winding and floating fiber the adhering to the nonwoven fabric that obtains of polypropylene superfine fibre, therefore, utilize these methods can not obtain particulate seizure property and the equal excellent melt spraying non-woven fabrics of aeration both sides.
A kind of melt-spraying spinning device is disclosed for Japanese Unexamined Patent Application Publication 2009-534548 number, the ratio L/D that this melt-spraying spinning device has length L and a cross-sectional dimension D is the spinning-nozzle more than 20, makes the nonwoven fabric that is made of less than the polypropylene fibre of 0.5 μ m diameter by carry out spinning with low-down throughput (throughput) or polymer flow velocity.But, when using this device to utilize the nonwoven fabric that the meltblown manufacturing is made of superfine polypropylene fibre, winding, the floating fiber that can produce fiber adhere to the nonwoven fabric that obtains, can not obtain the equal excellent melt spraying non-woven fabrics of particulate seizure property and aeration both sides.
Summary of the invention
The technical problem that invention will solve
Therefore, though the object of the present invention is to provide suppress Filament-wound Machine and floating fiber adhere to the little maximum fine pore of cloth density and average fine pore is also little and particulate catch property and aeration both sides all the excellent melt spraying non-woven fabrics that is consisted of by superfine fibre, this melt spraying non-woven fabrics manufacture method and for the manufacture of the device of this melt spraying non-woven fabrics.
The technological means that is used for the technical solution problem
The result who scrutinizes in view of above-mentioned purpose, the discoveries such as the present application people, (1) finish by the extension that makes wire guiding nipple and attract interval between the cylinder to be in molten polymer and the in fact not vibrative scope of described polymer fiber that obtains in, can suppress fracture of wire and the winding of described polymer fiber, and, (2) even the outer peripheral face by will attracting cylinder and attract interval between the wire guiding nipple side end of cover to be set as in the surface attachment of the melt spraying non-woven fabrics that obtains or the fiber that contacts fracture of wire also to attract to remove, even produce winding and the floating fiber of described polymer fiber, also can suppress adhering to of they, even the result can obtain the little maximum fine pore of cloth density and average fine pore is also little, particulate catches all excellent melt spraying non-woven fabrics that is made of superfine fibre of property and aeration both sides, thereby has expected the present invention.
That is, method of the present invention is the manufacture method of the melt spraying non-woven fabrics that is made of superfine fibre,
The method is used following device for melt blowing, and this device for melt blowing has: wire guiding nipple, the air nozzle that it has the following a plurality of spinning-nozzles of diameter 200 μ m and is positioned at these a plurality of spinning-nozzles both sides; Attract cylinder, its be located at described wire guiding nipple near, have porous peripheral part; A pair of attraction cover, it is located at the upstream side of described wire guiding nipple and the position in downstream in the mode that covers described attraction cylinder,
In the method, use described device for melt blowing, to extend from the hot-air that adds that described air nozzle sprays from the molten polymer utilization of described spinning-nozzle ejection, the superfine fibre of the described polymer that obtains trapped attract on the cylinder, make thus by below the number average fibre diameter 1 μ m, the melt spraying non-woven fabrics that consists of of distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) below 1.3, the superfine fibre of the fibre diameter rate of change below 55%
The manufacture method of the described melt spraying non-woven fabrics that is made of superfine fibre is characterised in that,
(1) extension that the interval between described wire guiding nipple and the described attraction cylinder is set in described molten polymer finish and the in fact not vibrative scope of described polymer fiber that obtains in; (2) even be set as the interval between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover in the surface attachment of the melt spraying non-woven fabrics that obtains or contact in the scope that the fiber of fracture of wire also can attract to remove.
Be preferably, the spray volume of the molten polymer of each described spinning-nozzle is below 50mg/ minute, and the described ejection flow velocity that adds hot-air is that 100m/ is more than second.Be preferably, the described spray volume that adds hot-air of per unit width is 800Nm
3More than/the hr/m.Be preferably, the traffic attraction of the per unit width of described attraction cylinder is described more than 5 times of spray volume that add hot-air, and the ratio of the total traffic attraction of described a pair of attraction cover and the traffic attraction of described attraction cylinder (not being scaled the traffic attraction of per unit width) is 0.2～0.9.
Be preferably, described wire guiding nipple and the described temperature that adds hot-air are (fusing point of described polymer)～(fusing point of described polymer+50 ℃).
As described polymer, the preferred moving speed of melt (JISK7210,230 ℃, load 2, polypropylene 160g) with 1,000～2,000g/10 minute that use.
Device of the present invention is the manufacturing installation of the melt spraying non-woven fabrics that is made of superfine fibre, the number average fibre diameter of described superfine fibre is that 1 μ m is following, distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) is below 1.3, the fibre diameter rate of change is below 55%, described manufacturing installation is characterised in that
Have: wire guiding nipple, the air nozzle that it has the following a plurality of spinning-nozzles of diameter 200 μ m and is positioned at these a plurality of spinning-nozzles both sides; Attract cylinder, its be located at described wire guiding nipple near, have porous peripheral part; A pair of attraction cover, it is located at the upstream side of described wire guiding nipple and the position in downstream in the mode that covers described attraction cylinder, wherein,
(a) extension that is set as described molten polymer of the interval between described wire guiding nipple and the described attraction cylinder finish and the in fact not vibrative scope of described polymer fiber that obtains in, even (b) interval between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover is set as in the surface attachment of the melt spraying non-woven fabrics that obtains or contacts in the scope that the fiber of fracture of wire also can attract to remove.
Take said method and device as the basis, be preferably, be spaced apart 30～100mm between described wire guiding nipple and the described attraction cylinder.Be preferably, be spaced apart 10～40mm between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover.
Be preferably, ratio in half side face of the described wire guiding nipple side of described attraction cylinder, that covered lid by described a pair of attraction is 60～90%.Be preferably, the attraction zone of described attraction cylinder is 1/6～1/3 with respect to the area ratio of outer peripheral face.
Be preferably, described spinning-nozzle sets row with per 1 inch density more than 50 at wire guiding nipple.
Melt spraying non-woven fabrics of the present invention is characterised in that, by the number average fibre diameter be below the 1 μ m, distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) is below 1.3, the fibre diameter rate of change is that superfine fibre below 55% consists of.
Be preferably, the number average fibre diameter of melt spraying non-woven fabrics is below the 0.7 μ m.In addition, be preferably, the average cloth density of melt spraying non-woven fabrics is 12g/m
2Below, maximum fine pore and the average fine pore of utilizing the bubble point method to obtain are respectively below the 12 μ m and below the 6 μ m, and venting quality (JIS L 1096) is 5mL/cm
2More than/second.Be preferably, (JIS K7210,230 ℃, load 2, polypropylene 160g) consists of superfine fibre by the moving speed of the melt with 1,000～2,000g/10 minute.
The invention effect
The superfine fibre that melt spraying non-woven fabrics of the present invention is little by fiber diameter, distribution of fiber diameters is narrow forms, and therefore, also has little maximum fine pore and an average fine pore even cloth density is little.Therefore, particulate seizure property and aeration both sides are all excellent, can catch performance by the high particulate of long term maintenance.Therefore, nonwoven fabric of the present invention is useful to the liquid filter of light weight and small size, pneumatic filter, dust mask, battery separator etc.In addition, by stacked nonwoven fabric of the present invention, can obtain to have filter, the dividing plate that high particulate catches performance.
The manufacture method of melt spraying non-woven fabrics of the present invention and the employed device of the manufacture method of this melt spraying non-woven fabrics, (1) owing to the interval between wire guiding nipple and the attraction cylinder is set as the extension end of molten polymer, and in the in fact not vibrative scope of the described polymer fiber that obtains, therefore, can suppress fracture of wire and the winding of described polymer fiber, (2) though since the outer peripheral face that will attract cylinder and interval between the wire guiding nipple side end that attraction is covered be set as in the surface attachment of the melt spraying non-woven fabrics that obtains or contact in the scope that the fiber of fracture of wire also can attract to remove, therefore, can effectively remove the fiber that disperses that is produced by fracture of wire, therefore, can obtain little by fiber diameter, the melt spraying non-woven fabrics that the narrow superfine fibre of distribution of fiber diameters consists of.
Description of drawings
Fig. 1 is the transverse sectional view of an example of the manufacturing installation of expression melt spraying non-woven fabrics of the present invention.
Fig. 2 is the exploded perspective view of the internal structure of the attraction cylinder in the device of presentation graphs 1.
Fig. 3 is the long side direction cutaway view of the internal structure of the attraction cylinder in the device of presentation graphs 1.
Fig. 4 is the part section front view of the part of excision presentation graphs 1 device.
Fig. 5 is near the amplification partial sectional view in capture position of the polymer fiber in presentation graphs 1 device.
Fig. 6 is that expression attracts to cover the schematic diagram that lid attracts the overlay area of cylinder.
Fig. 7 is the cutaway view of the internal structure of the wire guiding nipple in the device for melt blowing of presentation graphs 1.
Fig. 8 is the local amplification view of major part of the wire guiding nipple of presentation graphs 7.
Fig. 9 is the partial top view with a side of the plate of groove of spinning-nozzle of the wire guiding nipple of expression pie graph 7.
Figure 10 is the partial front elevation view of the arrangement of the spinning-nozzle in the wire guiding nipple of presentation graphs 7.
Figure 11 is that expression is from the schematic diagram that flows of the polymer fiber of row wire guiding nipple ejection.
Figure 12 is another routine cutaway view of the manufacturing installation of expression melt spraying non-woven fabrics of the present invention.
Figure 13 is the cutaway view that is illustrated in the device for melt blowing that uses in the comparative example 1.
Figure 14 is the cutaway view that is illustrated in the device for melt blowing that uses in the comparative example 2.
Figure 15 is the coordinate diagram of distribution of fiber diameters of the melt spraying non-woven fabrics of expression embodiment 1～3 and comparative example 6.
Figure 16 is that expression is used for utilizing the bubble point method to obtain the pressure of average fine pore and maximum fine pore-the see through coordinate diagram of flow curve.
The specific embodiment
[1] material resin
Polymer as consisting of melt spraying non-woven fabrics gets final product so long as become the thermoplastic resin of the molten polymer that can melt and spray.As the thermoplastic resin that can melt and spray, the polyolefin such as polyethylene, polypropylene, polyester, polyether-ether-ketone, polyphenylene sulfide, polyamide etc. have been enumerated.Melt spraying non-woven fabrics preferred polyolefm or the polyester that is consisted of by superfine fibre of the present invention, particularly preferably polyolefin.
As described polyolefin, enumerate the homopolymers of the alpha-olefins such as propylene, ethene, butene-1, hexene-1, octene-1,4-methylpentene-1 or two or more random copolymers or the block copolymer of these alpha-olefins.Wherein optimization polypropylene particularly preferably has the polypropylene that 1,000～2,000g/10 divides the moving speed of melt (MFR) of planting.Be polypropylene more than 1,000g/10 minute by using MFR, can make melting mixing temperature and ejection temperature lower.If MFR less than 1,000g/10 minute, then must improve the melting mixing temperature, not only spray each other easily welding of fiber, distribution of fiber diameters broadens, and produces easily the fiber fracture of wire.On the other hand, if MFR surpasses 2,000g/10 minute, then fiber shortens, and may cause the undercapacity of nonwoven fabric.The lower limit of MFR is preferably 1,200g/10 minute, and more preferably 1,300g/10 minute, in addition, the upper limit was preferred 1, and 800g/10 minute, more preferably 1,700g/10 minute.Polyacrylic MFR measures under the condition of 230 ℃ of load 2.16kg and temperature based on JIS K7210.
Polyacrylic weight average molecular weight (Mw) is preferably 1 * 10
4～2 * 10
5, more preferably 5 * 10
4～10 * 10
5Polyacrylic molecular weight distribution [weight average molecular weight (Mw)/number-average molecular weight (Mn)] is preferably 1.1～5, and more preferably 1.5～4, most preferably be 2～3.5.
As polypropylene, can preferably use random copolymer, block copolymer or the graft copolymer of the propylene of Noblen or more than half polymerization ratio and other alpha-olefin (ethene, butylene, hexene, 4-methylpentene, octene etc.), unsaturated carboxylic acid or derivatives thereof (acrylic acid, anhydrous maleic acid etc.), aromatic vinyl monomer (styrene etc.) etc.These polypropylene can use separately, and the mixture that perhaps also can be used as multiple polymers uses, and also can mix use with polypropylene polyolefin in addition.
As described polyester, enumerate polyethylene terephthalate, polybutylene terephthalate (PBT), polytrimethylene terephthalate etc., any that it is desirable in these is principal component.Wherein, preferred polyethylene terephthalate or polybutylene terephthalate (PBT).Mixing in the situation of using multiple polyester, any of preferred aforesaid polyester is more than 50 % by weight, more preferably more than 70 % by weight, most preferably is more than 90 % by weight.The melt spraying non-woven fabrics that is made of polyethylene terephthalate, polybutylene terephthalate (PBT) or polytrimethylene terephthalate is higher owing to fusing point, therefore, and excellent heat resistance, and also excellent based on the DIMENSIONAL STABILITY of heat.
As described polyamide, enumerate kymene (nylon 3) (registration mark), polyamide 4 (nylon 4) (registration mark), polyamide 6 (nylon 6) (registration mark), polyamide 6-6 (nylon 6-6) (registration mark), polyamide 12 (nylon 12) (registration mark) etc.
In the scope that does not diminish effect of the present invention, can in material resin, add Nucleating Agent, delustering agent, pigment, mould inhibitor, antiseptic, fire retardant, hydrophilizing agent, light stabilizer etc.
[2] manufacturing installation of melt spraying non-woven fabrics
Fig. 1～Figure 10 represents an example of the manufacturing installation of melt spraying non-woven fabrics of the present invention.This manufacturing installation has: wire guiding nipple 1, and it sprays with the superfine fibre shape molten polymer to horizontal direction; Attract cylinder 2, its be located at wire guiding nipple 1 near, be used for capturing superfine fibre; A pair of attraction cover (upstream side attracts cover 3a and downstream to attract cover 3b), it is configured to cover described attraction cylinder 2 at upstream side outer peripheral face, described wire guiding nipple 1 that attracts cylinder 2 and the assigned position in downstream.At this, the downstream is the side that the WEB of the melt spraying non-woven fabrics 4 that formed by the superfine fibre from wire guiding nipple 1 ejection flows down, and upstream side is a side (opposition side in downstream) that does not form described melt spraying non-woven fabrics 4 with respect to wire guiding nipple 1.
(1) wire guiding nipple
Such as Fig. 7～shown in Figure 10, wire guiding nipple 1 has: a pair of plate 11a, the 11b with groove that are used to form spinning-nozzle 11c; Have and a plurality ofly add the through hole 120 of hot-air and from pair of block 12a, the 12b of two-side supporting with plate 11a, the 11b of groove for supply; So that through hole 120 is located at a pair of jet 13,13 of downstream of piece 12a, 12b via stream 14,14 modes that are communicated with near the air nozzle 15,15 of the opening leading section of spinning-nozzle 11c.First 12a has a plurality of through holes 121 for supply with molten polymer from extruder (not shown) to spinning-nozzle 11c.
Such as Fig. 8～shown in Figure 10, the through hole 121 of the piece 12a that flows for molten polymer is connected with peristome 111 with the plate 11a of groove via filter 113.Comprise a plurality of parallel semicircle tubular groove 110c that recess 110d with a plurality of current dividers 112 and downstream with recess 110d are connected with the plate 11a of groove.Identical with plate 11a with groove except not having peristome 111 with the plate 11b of groove.In the time of will overlapping with plate 11a, the 11b of groove, by they recess 110d, 110d, current divider 112,112 and semicircle tubular groove 110c, 110c forms melt polypropylene and accumulates the 11d of place, divides stream and spinning-nozzle 11c.It is even to utilize current divider 112,112 can make to the flow of the molten polymer of spinning-nozzle 11c.
The diameter D of spinning-nozzle 11c is below the 200 μ m.Cross sectional shape at spinning-nozzle 11c is not that diameter D is for having and cross section diameter of a circle of the same area in the situation of circle.If diameter D surpasses 200 μ m, then being difficult to make the number average fibre diameter is below the 1 μ m.Diameter D is preferably below the 150 μ m, more preferably below the 130 μ m.The lower limit of diameter D is preferably 50 μ m technically.Even in order to make from the ejection flow of spinning-nozzle 11c ejection molten polymer, the length L of preferred spinning-nozzle 11c and the ratio L/D of diameter D are more than 20, more preferably more than 30, most preferably are 100～300.For the winding of the superfine fibre of the described polymer that prevents from spraying and obtain efficiently melt spraying non-woven fabrics, preferred per 1 inch more than 50 of the density of spinning-nozzle 11c, more preferably more than 70, most preferably 70～300.
The interval G of air nozzle 15 is preferably 0.1～1mm, more preferably 0.2～0.8mm.In addition, the total linear spacing TG interval of 13 edge (jet 13) is preferably 0.1～2mm, more preferably 0.4～1.5 mm.By change jet 13,13 interval, can adjust air nozzle 15,15 interval G and total linear spacing TG.
(2) attract cylinder
Such as Fig. 1～shown in Figure 6, be used for capturing continuously from the attraction cylinder 2 of the superfine fibre of spinning-nozzle 11c ejection and the described polymer that extends and have: (a) cylinder element 21, it has the peristome 21a that extends along axis direction, is connected with exhaust apparatus (not shown); (b) the porous cylinder element 22, it is fixed in the side plate 201 of flange (201a) with the cylindric support 202 of flange (202a, 202b), should be fixed in rotating shaft 203 with side plate 201 of flange (201a), should be with the cylindric support 202 of flange (202a, 202b) across bearing 206a supporting cylinder member 21; (c) cylindric mesh member 23, it is located on the outer peripheral face of porous cylinder element 22.Cylinder element 21 is connected by bearing 205b and rotating shaft 203, and therefore, even axle 203 rotations, cylinder element 21 is also fixed.Rotating shaft 203 is located at the freely supporting of bearing 205a rotation of supporting mass 210, is fixed with the belt wheel 204 that is driven by motor (not shown) in the outer end of this rotating shaft 203.Cylindric support 202 is located at the freely supporting of bearing 206b rotation of supporting mass 211 at the outer peripheral face of flange 202b.Be provided with mechanism 220 for the circumferential locations that is fixed in advance regulation in the part of cylinder element 21.Described porous cylinder element 22 and the cylindric mesh member 23 of being located on its outer peripheral face rotates integratedly, form melt spraying non-woven fabrics 4 thereby capture continuously from the superfine fibre of the described polymer of spinning-nozzle 11c ejection and extension.
For fibre stream 41 and nonwoven fabric 4 (with reference to Fig. 5) are acted on enough attractions, the diameter (with reference to Fig. 2) of the attraction hole 22a of porous cylinder element 22 is preferably 3～20mm, 5～15mm more preferably, and the percent opening of porous cylinder element 22 is preferably 30～70%, more preferably 40～60%.As porous cylinder element 22, from the viewpoint of aeration and mechanical strength, the cylinder that is preferably consisted of by the metallic plate of stainless steel with a plurality of punchings etc.In addition, cylindric mesh member 23 preferably is made of the fiber of dystectic heat-resistant resin (nylon etc.).
As shown in Figures 1 and 2, axis direction edge at the peristome 21a of cylinder element 21, and vacate a little compartment of terrain between the inner surface of porous cylinder element 22 and be fixed with a pair of demarcation strip 21b, 21c, this a pair of demarcation strip 21b, 21c are for the space of separating oral area 21a and part in addition.The space that is surrounded by peristome 21a, a pair of demarcation strip 21b, 21c and porous cylinder element 22 is connected with the inside of cylinder element 21, forms to attract regional SA.It is preferred so that near the superfine fibre collision upstream extremity that attracts regional SA attracts the mode of cylinder 2 that wire guiding nipple 1 is positioned.In addition, preferred so that superfine fibre and the mode that the outer peripheral face of attraction cylinder 2 generally perpendicularly contacts are regulated the emission direction of wire guiding nipple 1.
Consist of and attract the central angle θ of regional SA to be preferably 60～120 °, more preferably 80～100 °.That is, attract regional SA with respect to the area ratio of the outer peripheral face that attracts cylinder 2 and be preferably 1/6～1/3, more preferably 2/9～5/18.If central angle θ less than 60 °, then attracts regional SA narrow, be difficult to stably make nonwoven fabric 4.On the other hand, if central angle θ surpasses 120 °, then attract regional SA wide, inadequate with respect to the attraction of nonwoven fabric 4.Attract the diameter of cylinder 2 to be preferably 30～150cm, more preferably 50～100cm.
(3) interval between wire guiding nipple and the attraction cylinder
Interval d between the outer peripheral face of wire guiding nipple 1 and attraction cylinder 2
1In the in fact not vibrative scope of fiber that need to be in the extension end of molten polymer and obtain (with reference to Fig. 5).As shown in figure 11, extending and surpassing predetermined distance (d from the molten polymer of the spinning-nozzle 11c of wire guiding nipple 1 ejection
Max) time can produce vibration.Think that this is to produce turbulent flowization owing at a high speed heated air flow and the friction between the ambient air.In the situation of the melt spraying non-woven fabrics that the fiber by the thickness more than a few μ m consists of, even produce the winding that is caused by turbulent flow, on performance, can not become large problem yet, but be in the situation of the superfine fiber below the 1 μ m at the number average fibre diameter, in case the winding that produces develops continuously, then can generate the part of extreme large footpathization, not only the maximum fine pore of melt spraying non-woven fabrics can become greatly, and produces the fiber that disperses that is caused by fracture of wire easily.Therefore, need to be after the extension of molten polymer finishes, the superfine fibre of described polymer trapped in the in fact not vibrative scope and attracts on the cylinder 2.
Form in the situation that the number average fibre diameter is the superfine fibre below the 1 μ m in fact not vibrative scope d at the spinning-nozzle 11c that utilizes meltblown by the diameter D below the 200 μ m
MaxBe generally below about 150mm, therefore, the interval d between the outer peripheral face of wire guiding nipple 1 and attraction cylinder 2
1Be preferably below the 100mm, more preferably below the 90mm, most preferably be below the 70mm.Interval d
1Lower limit be preferably 30mm, 40mm more preferably.If interval d
1Less than 30mm, then extend insufficiently, and the cooling of fiber is insufficient, therefore produces easily resin mass.
(4) attract cover
As shown in Figure 1, the side (downstream) that the WEB that attracts cover 3a, 3b to be located at the melt spraying non-woven fabrics 4 that is formed by the superfine fibre from wire guiding nipple 1 ejection flows down and these both sides of a side (upstream side) that do not form described melt spraying non-woven fabrics 4 with respect to wire guiding nipple 1.Because floating fiber is being taken advantage of air stream (upstream side) movement also downwards, therefore, by the attraction cover 3b of upstream side is set, can effectively remove these floating fibers.Attract cover 3a, 3b to have cover main part 31a, 31b and the 32a of pipe section, 32b, cover main part 31a, 31b have along bottom peristome 35a, the 35b of the outer peripheral face that attracts cylinder 2, the 32a of pipe section, 32b are located at one side of cover main part 31a, 31b, have the peristome 33a, the 33b that are connected by pipeline and exhaust apparatus.
As shown in Figure 1, the attraction cover 3a in downstream is preferably disposed on from the assigned position in the downstream of wire guiding nipple 1 to melt spraying non-woven fabrics 4 by the zone of the part of taking out from attracting cylinder 2 to peel off (in the drawings for attracting the roughly topmost of cylinder 2), preferably is set to cover as much as possible the regional SA of described attraction.The attraction cover 3b of upstream side preferably is set to attraction cover 3a with described downstream with respect to wire guiding nipple 1 symmetry.As shown in Figure 6, establishing the cylinder outer circumferential area that is attracted cover 3a, 3b covering is S
1And S
2, establishing cylinder outer circumferential area between attraction cover 3a, the 3b, that be not attracted cover 3a, 3b covering is S
3The time, be attracted the area summation (S that cover 3a, 3b cover
1+ S
2) with respect to above-mentioned area summation (S
1+ S
2+ S
3) ratio (cylinder coverage rate=(S
1+ S
2)/(S
1+ S
2+ S
3)) be preferably 60～90%, more preferably 70～85%.If the cylinder coverage rate is less than 60%, then the attraction of floating fiber is insufficient.If the cylinder coverage rate surpasses 90%, then attract cover 3a, 3b excessive on the impact of fibre stream 41, fibre stream 41 can be widened, and the winding of superfine fibre becomes many.At this, described area summation (S
1+ S
2+ S
3) be preferably set to and occupy the half cycle that attracts cylinder 2.Therefore, be not attracted that cover 3a, 3b cover and the outer circumferential area S relative with wire guiding nipple 1
3Be preferably 10～40% of the half cycle area that attracts cylinder 2, more preferably 15～30%.Be not attracted that cover 3a, 3b cover and the outer circumferential area S relative with wire guiding nipple 1 by setting in this wise
3, can dispose attraction cover 3a, 3b in the mode as appropriate intervals between wire guiding nipple 1 and attraction cover 3a, the 3b, and can suppress the disorderly of fibre stream 41 and can effectively remove floating fiber.
(5) interval between attraction cover and the attraction cylinder outer peripheral face
The preferred whole constant in interval between bottom peristome 35a, the 35b of attraction cover 3a, 3b and the outer peripheral face of attraction cylinder 2.Even need to being set as at the surface attachment of melt spraying non-woven fabrics 4 or the fiber that contacts fracture of wire at wire guiding nipple 1 side end 311a, 311b at least, the interval between the outer peripheral face of described attraction cover 3a, 3b and attraction cylinder 2 also can effectively attract the interval d that removes
2Interval d
2That each attracts the distance between the outer peripheral face of end 311a, the 311b of cover 3a, 3b and attraction cylinder 2.Particularly, interval d
2Be preferably 10～40mm, more preferably 15～35mm.If interval d
2Less than 10mm, then attract can't flow into enough air among cover 3a, the 3b, removing of floating fiber is insufficient.If interval d
2Surpass 40mm, the flow velocity that then flows into the air that attracts cover 3a, 3b is excessively slow, can not be fully except attachment removal or be contacted with the floating fiber on the surface of melt spraying non-woven fabrics 4.Interval between the outer peripheral face of the interval between the outer peripheral face of described attraction cover 3a and attraction cylinder 2 and described attraction cover 3b and attraction cylinder 2 can be the same or different.
Each attracts cover 3a, 3b to be not limited to shape shown in Figure 1, as shown in figure 12, can also have the 34a of pipe section, the 34b that is connected with exhaust apparatus (not shown) near the capture position of fibre stream 41.
As previously discussed, will attract cover 3a, 3b to be configured to suitable cylinder coverage rate, and will become described attraction cover 3a, the 3b of air inflow aperture and the gap d between the attraction cylinder 2
2Be configured to suitable distance, by aforesaid attraction cover 3a, 3b, can effectively suppress the disorderly of fibre stream 41 and effectively remove floating fiber, therefore, can obtain the melt spraying non-woven fabrics that the superfine fibre little by fiber diameter, that distribution of fiber diameters is narrow consists of.
[3] manufacture method of melt spraying non-woven fabrics
The method of the present invention of using said apparatus to make melt spraying non-woven fabrics is method as described below:
To extend from the hot-air that adds that described air nozzle 15,15 sprays from the molten polymer utilization of described spinning-nozzle 11c ejection, the superfine fibre of the described polymer that obtains trapped attract on the cylinder, make thus by below the number average fibre diameter 1 μ m, the melt spraying non-woven fabrics that consists of of distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) below 1.3, the superfine fibre of the fibre diameter rate of change below 55%, it is characterized in that
(1) finish by the extension that makes wire guiding nipple 1 and attract interval between the cylinder 2 to be in molten polymer and the in fact not vibrative scope of polymer fiber that obtains in, suppress fracture of wire and the winding of described polymer fiber, (2) will attract the outer peripheral face of cylinder 2 and attract interval d between wire guiding nipple side end 311a, the 311b of cover 3a, 3b
2Even the fiber that being set as surface attachment or contact at the melt spraying non-woven fabrics that obtains has fracture of wire also can attract to remove.For the melt spraying non-woven fabrics that obtains, also can implement as required calendering and process, be with electric treatment, hydrophilicity-imparting treatment etc.
(1) melting mixing operation
The melting mixing temperature of described polymer is preferably (fusing point of described polymer)～(fusing point of described polymer+280 ℃).In polyacrylic situation, the melting mixing temperature is preferably 160～440 ℃, more preferably 170～420 ℃.
(2) superfine fibre forms operation
Spray the superfine fibre that adds hot-air and form described polymer from a plurality of spinning-nozzle 11c ejection molten polymers and from nozzle 15,15.Wire guiding nipple 1 and the temperature that adds hot-air are preferably (fusing point of described polymer)～(fusing point of described polymer+50 ℃).In polyacrylic situation, wire guiding nipple 1 and the temperature that adds hot-air are preferably 160～220 ℃, more preferably 170～210 ℃.If wire guiding nipple 1 and add the temperature of hot-air less than the fusing point of described polymer, then polymer solidifies after spinning-nozzle 11c ejection immediately hastily, therefore extends insufficient.On the other hand, if wire guiding nipple 1 and the temperature that adds hot-air surpass the fusing point of described polymer+50 ℃, the easy welding of polymer pole fine fibre that then forms, it is large that the deviation of fibre diameter becomes.
In order to form the polymer pole fine fibre, the spray volume of the molten polymer of each spinning-nozzle 11c was preferably below 50mg/ minute, more preferably below 30mg/ minute, most preferably was below 10mg/ minute.Although unqualified, the lower limit of the spray volume of molten polymer is preferably 1mg/ minute.
The ejection flow velocity that adds hot-air is preferably 100m/ more than second, more preferably 150～300m/ second.The spray volume that adds hot-air of per unit width is preferably 800Nm
3More than/the hr/m, more preferably 1,000～2,000Nm
3/ hr/m.
(3) capture operation
The traffic attraction of the attraction cylinder 2 of per unit width can suitably be regulated according to the physical property of the expectation of melt spraying non-woven fabrics 4, but in order to suppress filament welding each other, be preferably more than 5 times of spray volume from air nozzle 15,15 per unit width, more preferably more than 10 times, most preferably be more than 12 times.If attracting the traffic attraction of cylinder 2 is more than 5 times of spray volume that add hot-air, the attraction hole 22a of the major part that then adds hot-air by porous cylinder element 22 attracted to and attracts can suppress the disorder of fibre stream in the cylinder 2.Particularly, the traffic attraction of the attraction cylinder 2 of per unit width is preferably 10,000Nm
3More than/the hr/m, more preferably 15,000～25,000Nm
3/ hr/m.Attract cylinder 2 traffic attraction the upper limit without particular limitation of, but practical be 50 times of spray volume that add hot-air.
Attract the total traffic attraction of cover 3a, 3b and attract the ratio of the traffic attraction (not being scaled the traffic attraction of per unit width) of cylinder 2 to be preferably 0.2～0.9.In the scope of this traffic attraction ratio, can make the major part that adds hot-air flow into the disorder that attracts regional SA and prevent fibre stream, and the remainder and the ambient air that add hot-air are flowed in attraction cover 3a, the 3b, therefore can not only remove the fiber that disperses, and can be effectively except attachment removal or be contacted with the floating fiber of melt spraying non-woven fabrics 4.Above-mentioned ratio more preferably 0.3～0.6.Attract the total traffic attraction of cover 3a, 3b to be preferably 1,000～10,000Nm
3/ hr, more preferably 2,000～5,000Nm
3/ hr.
Attract the rotary speed of cylinder 2 to be preferably 1～20m/ minute, more preferably 3～15m/ minute.Attract cylinder 2 can be room temperature, also can heat as required.
(4) calendering treatment process
Process if the melt spraying non-woven fabrics that obtains is implemented calendering, then can not only improve mechanical strength, fine pore is diminished.In the situation that melt spraying non-woven fabrics is made of the polyolefin superfine fibre, can at room temperature roll processing.The pressure that calendering is processed is preferably 1～10MPa, more preferably 3～7MPa.
Melt spraying non-woven fabrics can become stacked product by the stacked processing of implementing calendering processing etc.In the situation that melt spraying non-woven fabrics is made of the polyolefin superfine fibre, the stacked product that the aperture reduces can have been obtained to suppress by at room temperature rolling processing.When the nonwoven fabric that is made of greater than the fiber of 1 μ m fiber diameter in the past at room temperature carries out stacked processing (calendering processing), nonwoven fabric is peeled off each other, therefore, it is in pressurizes under state that fritting melts and carries out stacked processing, therefore, fiber is crushed, the aperture diminishes, permeability extremely reduces, even but the nonwoven fabric that is made of superfine fibre of the present invention carries out in the stacked situation at ambient temperature, superfine fibre also can twine mutually securely because of anchoring effect, therefore can not peel off, because not heating, fiber can be crushed hardly, the aperture of the nonwoven fabric of basic retaining layer prestack can suppress the variation of permeability to be Min..
(5) charged treatment process
Can implement to melt spraying non-woven fabrics as required the band electric treatment such as Corona discharge Treatment.Charged nonwoven fabric has 10
-11～10
-7Enclosed pasture/cm
2About the quantity of electric charge, can Electrostatic particulate.
(6) hydrophilicity-imparting treatment operation
Also can implement hydrophilicity-imparting treatment to melt spraying non-woven fabrics.Hydrophilicity-imparting treatment can be undertaken by monomer-grafted processing, surfactant processing etc.In the situation of carrying out the surfactant processing, preferred nonionic is surfactant.
[4] melt spraying non-woven fabrics
Melt spraying non-woven fabrics of the present invention has following physical property.Need to prove that the method that each physical property utilizes the embodiment hurdle to put down in writing is measured.
The number average fibre diameter that (1) 1 μ m is following
If the number average fibre diameter is below the 1 μ m, then melt spraying non-woven fabrics has little average fine pore and maximum fine pore and high venting quality, and particulate catches excellent performance.The number average fibre diameter is preferably below the 0.7 μ m, more preferably 0.3～0.7 μ m.
The weight average fibre diameter that (2) 0.8 μ m are following
If the weight average fibre diameter is below the 0.8 μ m, then melt spraying non-woven fabrics has little average fine pore and maximum fine pore and high venting quality, and particulate catches excellent performance.The weight average fibre diameter is preferably 0.3～0.8 μ m.
Distribution of fiber diameters below (3) 1.3 (weight average fibre diameter/number average fibre diameter)
If distribution of fiber diameters is below 1.3, then melt spraying non-woven fabrics has little average fine pore and maximum fine pore, even cloth density is little, it is also excellent that particulate catches performance.Distribution of fiber diameters is preferably 1.05～1.25.
The fibre diameter rate of change below (4) 55%
If the fibre diameter rate of change is below 55%, then melt spraying non-woven fabrics has little average fine pore and maximum fine pore, even cloth density is little, it is also excellent that particulate catches performance.The fibre diameter rate of change is preferably below 50%, more preferably below 45%.
The average fine pore that (5) 6 μ m are following
If average fine pore is below the 6 μ m, then melt spraying non-woven fabrics has excellent particulate seizure performance.Average fine pore is preferably below the 5.5 μ m, more preferably below the 5 μ m.
The maximum fine pore that (6) 12 μ m are following
If maximum fine pore is below the 12 μ m, then melt spraying non-woven fabrics has excellent particulate seizure performance.Maximum fine pore is preferably below the 10 μ m, more preferably below the 8 μ m.
(7) 5mL/cm
2/ second above venting quality
If venting quality is less than 5mL/cm
2/ second, then the mesh of melt spraying non-woven fabrics stops up and accelerates.Venting quality is preferably 5～30mL/cm
2/ second.On the other hand, if venting quality surpasses 30mL/cm
2/ second, then micro particle catching Efficiency Decreasing.
(8) 12g/m
2Following average cloth density
If average cloth density surpasses 12g/m
2, venting quality variation then.Average cloth density is preferably 1～12g/m
2, 2～10g/m more preferably
2, most preferably be 3～9g/m
2
Cloth variations in density rate below (9) 5%
If cloth variations in density rate surpasses 5%, then maximum fine pore is large, the uniformity variation of venting quality.Cloth variations in density rate is preferably below 4%.
The average film thickness of (10) 0.05～0.5mm
The melt spraying non-woven fabrics of average film thickness 0.05～0.5mm is suitable for filter.
(11) 1～20% filling rate (80～99% the porositys)
If filling rate is less than 1%, then melt spraying non-woven fabrics does not have sufficient micro particle catching rate.On the other hand, if filling rate surpasses 20%, then venting quality is relatively poor.Filling rate is preferably 2～10%.
The tensile failure intensity (long side direction) of (12) 1～15N/50mm width
Melt spraying non-woven fabrics with long side direction tensile failure intensity of 1～15N/50mm width is suitable for filter.Tensile failure intensity is preferably 1.2～13N/50mm width.
Micro particle catching rate more than (13) 90%
If the micro particle catching rate is more than 90%, then is suitable as filter and uses.The micro particle catching rate is preferably more than 95%.
By following embodiment the present invention is described in further detail, but the present invention is not limited to these examples.
Embodiment 1
Be the polypropylene PP[MFR that is modulated into of polymerization catalyst (JIS K7210,2.16kg, 230 ℃) with using metallocene: 1,550g/10 minute, weight average molecular weight (Mw): 7 * 10
4, molecular weight distribution (Mw/Mn): 2.5, fusing point: 155 ℃] as raw material, use Fig. 1～device shown in Figure 10 to make under the conditions shown in Table 1 the melt spraying non-woven fabrics of width 300mm.Need to prove, attract cover 3a, 3b with the (S among Fig. 6
1+ S
2+ S
3) for the mode balanced configuration of the half cycle amount that attracts cylinder 2 in upstream side and the downstream of wire guiding nipple 1.
Total linear spacing TG is 0.7mm, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Embodiment 3
The polypropylene spray volume of each spinning-nozzle is 6.7mg/ minute, and attracting the rotary speed of cylinder is 7.2m/ minute, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Change the size that attracts cover 3a, 3b, namely in Fig. 6, do not change S
3And only reduce equably S
1And S
2, make cylinder coverage rate [(S
1+ S
2)/(S
1+ S
2+ S
3) * 100] be 60%, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Change the size that attracts cover 3a, 3b, namely in Fig. 6, do not change S
3And only increase equably S
1And S
2, making the cylinder coverage rate is 85%, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Embodiment 6
The length L of using spinning-nozzle as 3mm, diameter D as 0.1mm, L/D be 30, the quantity of spinning-nozzle is 1,001, total linear spacing TG are the wire guiding nipple of 0.5mm, making the melting mixing temperature is that 400 ℃, the polypropylene spray volume of each spinning-nozzle are 22.5mg/ minute, the flow velocity and the spray volume that add hot-air is respectively 225m/ second and 1,650Nm
3The ratio of/hr/m, cylinder traffic attraction/add hot-air spray volume is 11.8, the interval d between wire guiding nipple and the attraction cylinder
1For 90mm, to attract the rotary speed of cylinder be 11.0m/ minute, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Embodiment 7
If L/D is 50, the polypropylene spray volume of each spinning-nozzle is 5.6mg/ minute, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 6 in addition.
Embodiment 8
If the cover traffic attraction is 2,400Nm
3The ratio of/hr, cover traffic attraction/cylinder traffic attraction is 0.38, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Embodiment 9
If the cover traffic attraction is 3,600Nm
3The ratio of/hr, cover traffic attraction/cylinder traffic attraction is 0.58, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
It is the polypropylene [MFR:1 that polymerization catalyst is modulated into that use utilizes metallocene, 200g/10 minute, weight average molecular weight: 74,000, molecular weight distribution: 3.4, fusing point: 158 ℃], made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Embodiment 11
The melt spraying non-woven fabrics of embodiment 1 is implemented Corona discharge Treatment (applied voltage: 17kV) (with reference to table 1).
Embodiment 12
The melt spraying non-woven fabrics of embodiment 1 has at room temperature been implemented calendering processing (pressure: 5MPa) (with reference to table 1).
If attract the wire guiding nipple side end of cover and the interval d between the attraction cylinder outer peripheral face
2Be 30mm, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Comparative example 1
Use as shown in figure 13 and only in the downstream of the wire guiding nipple 1 that attracts cylinder 2 device that attracts cover 301 is set, establishing traffic attraction is 6,000Nm
3The ratio of/hr, cover traffic attraction/cylinder traffic attraction is 0.96, has made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.Need to prove that attracting the WEB direct of travel length of cover 301 is 700mm.
Comparative example 2
Use the attraction cover 302a that the mode have as shown in figure 14 the fibre stream of covering 41 integral body engages with wire guiding nipple 1, the device of 302b, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Comparative example 3
If the interval d between wire guiding nipple and the attraction cylinder
1Be 150mm, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Comparative example 4
If attract the wire guiding nipple side end of cover and the interval d between the attraction cylinder outer peripheral face
2Be 5mm, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Comparative example 5
If attract the wire guiding nipple side end of cover and the interval d between the attraction cylinder outer peripheral face
2Be 50mm, made in the same manner melt spraying non-woven fabrics (with reference to table 1) with embodiment 1 in addition.
Comparative example 6
Use the polypropylene melt blown non-woven fabric (trade name " SYNTEX nano ", Mitsui Chemicals, Inc's system) of selling on the market.
Utilize following method to measure the physical property of the melt spraying non-woven fabrics of embodiment 1～13 and comparative example 1～6.The results are shown in the table 2.
(1) average film thickness
By utilizing dial thickness gauge to measure the thickness at 3 places (apart from the part of end 50mm, 150mm and 250mm) on the width of melt spraying non-woven fabrics and averaging to obtain average film thickness.
(2) average cloth density
By 10 melt spraying non-woven fabrics test films of 100mm * 100mm are measured the quality (g) of the water balance state under 23 ℃ of temperature and the humidity 50% and are averaged to obtain average cloth density.
(3) cloth variations in density rate
According to aforesaid 10 data having measured average cloth density, utilize the formula of cloth variations in density rate (%)=(standard deviation of cloth density)/(average cloth density) * 100 to obtain cloth variations in density rate.
(4) number average fibre diameter
By respectively measuring 10 at 10 places arbitrarily according to the electron micrograph of melt spraying non-woven fabrics until the fibre diameter of diameter 0.1 μ m level and they are on average obtained the number average fibre diameter.Figure 15 represents the distribution of fiber diameters of the melt spraying non-woven fabrics of embodiment 1～3 and comparative example 6.
(5) weight average fibre diameter
If the number of fiber of fibre diameter Di is Ni, utilize weight average fibre diameter (μ m)=∑ Di
2The formula of Ni/ ∑ DiNi is obtained the weight average fibre diameter.
(6) distribution of fiber diameters
Utilize the formula of distribution of fiber diameters=weight average fibre diameter/number average fibre diameter to obtain distribution of fiber diameters.
(7) the fibre diameter rate of change
Utilize the formula of the fibre diameter rate of change (%)=(standard deviation of fibre diameter/number average fibre diameter) * 100 to obtain the fibre diameter rate of change.
(8) average fine pore and maximum fine pore
Average fine pore and maximum fine pore are measured by bubble point method shown below (ASTM F316-86, JISK3832).At first, the melt spraying non-woven fabrics test film of the diameter 25mm of drying is placed automatic fine pore measure of spread device (model " CFP-1200AEX ", U.S. PMI company system), increase gradually the air pressure put on one side, the pressure P when obtaining air and beginning to see through the drying test sheet
1, and make master stream discharge curve shown in Figure 16, then making through flow is 1/2 half-dried flow curve.Similarly, increase gradually the air pressure of one side of melt spraying non-woven fabrics test film of the diameter 25mm of the solvent (trade name " POREWICK ", U.S. PMI company system) that has been full of surface tension 16dyne/cm in the pore, the pressure P when obtaining air and beginning to see through moistening test film
2, and make wet flow curve shown in Figure 16.
Average fine pore D
AVPressure P according to the intersection point place of half-dried flow curve and wet flow curve
CrossObtain by following formula.
D
AV＝4γcosα/(P
cross-P
1)
[wherein, γ is the surface tension of solvent, and α is that solvent phase is for polyacrylic contact angle.]
Maximum fine pore D
MAXObtain by following formula.
D
MAX＝4γcosα/(P
2-P
1)
(10) venting quality
Melt spraying non-woven fabrics test film with respect to 100mm * 100mm utilizes Fu Leize type testing machine to measure venting quality according to JIS L1096.
(11) filling rate
Utilize filling rate (%)=[average cloth density (g/m
2)/average film thickness (m)/resin density (g/m
3)] * 100 formula obtains filling rate.
(12) tensile failure intensity
The tensile failure intensity of the long side direction when measuring manufacturing with respect to the rectangle melt spraying non-woven fabrics test film of width 50mm according to JIS L1085.
(13) micro particle catching rate
Make concentration with 0.025mg/L contain the air of NaCl particle of particle diameter 0.3 μ m with respect to area 100cm
2The melt spraying non-woven fabrics test film with 31.8L/ minute flow by 3 seconds during, the mensuration machine of light scattering light quantity bulk billing system that utilizes JIS Z8813 regulation with 1 second measuring space 3 times by the NaCl particle concentration (mg/m before and after the nonwoven fabric test film
3), each capture rate of utilizing following formula to obtain is on average represented the micro particle catching rate.
Capture rate (%)=[(by the NaCl particle concentration of front NaCl particle concentration-after passing through)/by front NaCl particle concentration] * 100
(14) outward appearance
Visual statistics is present in melt spraying non-woven fabrics 1m
2In block (be limited to that to have diameter of a circle of the same area be more than the 0.2mm.) number, as the number of resin mass.
In addition, for the nonwoven fabric (1m that has carried out calendering processing (pressure 5MPa, room temperature)
2), visual statistics filming the number of band-like portions [length 1.4mm is above, aspect ratio (width of the part of length/the thickest) more than 5], as the number of floating fiber.
Table 1
Table 1 (continuing)
Table 1 (continuing)
Table 1 (continuing)
Table 1 (continuing)
Table 1 (continuing)
Table 2
Table 2 (continuing)
Table 2 (continuing)
Table 2 (continuing)
Table 2 (continuing)
As shown in Table 2, the nonwoven fabric of embodiment 1～13 by have below the 1 μ m, particularly the number average fibre diameter below the 0.7 μ m, distribution of fiber diameters below 1.3 and the polypropylene superfine fibre of the 55% following fibre diameter rate of change consist of, therefore, even cloth density is little, maximum fine pore and average fine pore are also little, and venting quality, tensile failure intensity, micro particle catching and outward appearance are all excellent.The melt spraying non-woven fabrics of having implemented with the embodiment 11 of electric treatment and having implemented the embodiment 12 that calendering processes shows more excellent micro particle catching.
Utilize the melt spraying non-woven fabrics that only is provided with the comparative example 1 of the device manufacturing that attracts cover in the downstream of the wire guiding nipple 1 that attracts cylinder to compare with embodiment 1～13, weight average fibre diameter, distribution of fiber diameters, the fibre diameter rate of change, maximum fine pore, average fine pore and cloth variations in density rate are large, micro particle catching rate variation, floating fiber is also many.
The melt spraying non-woven fabrics that in the cylinder coverage rate is the comparative example 2 made under 100% the condition is compared with embodiment 1～13, number average fibre diameter, weight average fibre diameter, distribution of fiber diameters, the fibre diameter rate of change, maximum fine pore, average fine pore and cloth variations in density rate are large, therefore, micro particle catching rate variation, resin mass is also many.In comparative example 2, think that therefore, fibre stream expands, cools off also inadequate owing to utilize attraction to cover covered fiber stream, thereby cause described each performance to reduce.
Compare with embodiment 1～13 above the melt spraying non-woven fabrics of the comparative example 3 of making under the condition of 100mm with attracting the interval between the cylinder at wire guiding nipple, number average fibre diameter, weight average fibre diameter, distribution of fiber diameters, the fibre diameter rate of change, maximum fine pore, average fine pore and cloth variations in density rate are large, therefore, micro particle catching rate variation, floating fiber is also many.
At the wire guiding nipple side end that attracts cover and the interval d between the cylinder outer peripheral face
2The melt spraying non-woven fabrics of the comparative example 4 of making under the condition less than 10mm is compared with embodiment 1～13, the attraction speed that attracts cover to produce is strong, number average fibre diameter, weight average fibre diameter, distribution of fiber diameters, the fibre diameter rate of change, maximum fine pore, average fine pore and cloth variations in density rate are large, therefore, micro particle catching rate variation, resin mass is also many.
At the wire guiding nipple side end that attracts cover and the interval d between the cylinder outer peripheral face
2The melt spraying non-woven fabrics that surpasses the comparative example 5 of making under the condition of 40mm is compared with embodiment 1～13, and distribution of fiber diameters, the fibre diameter rate of change and cloth variations in density rate are large, micro particle catching rate variation, and floating fiber is also many.
The polypropylene melt blown non-woven fabric of selling on the market of comparative example 6 (trade name " SYNTEX nano ", Mitsui Chemicals, Inc's system) compares with embodiment 1～13, average cloth density, weight average fibre diameter, distribution of fiber diameters and the fibre diameter rate of change are large, the venting quality variation.
Utilization has used the stacked processing of stack to make 6 layers of product of the thickness 0.1mm that is made of 6 superfine fibre nonwoven fabric that obtain by following step in embodiment 1.Being spaced apart about 0.04mm with roller at room temperature carries out stacked processing and makes two-layer product (the about 0.08mm of thickness) two superfine fibre nonwoven fabric that obtain in embodiment 1, two these two-layer product are again carried out stacked processing under the same conditions and make 4 layers of product (the about 0.14mm of thickness), be spaced apart about 0.08mm with roller again and at room temperature above-mentioned 4 layers of product and two-layer product carried out stacked processing and make 6 layers of product.
Be spaced apart that about 0.16mm at room temperature carries out stacked processing to 4 layers of product making and two-layer product in embodiment 14 and 6 layers of product making thickness 0.2mm with roller similarly to Example 14.
Each performance of embodiment 14 and 15 stacked nonwoven fabric is measured similarly to Example 1, is shown in Table 3.These stacked product nonwoven fabric under common processing can not peeled off each other.
Table 3
Claims (19)
1. the manufacture method of a melt spraying non-woven fabrics that is consisted of by superfine fibre,
The method is used following device for melt blowing, and this device for melt blowing has: wire guiding nipple, the air nozzle that it has the following a plurality of spinning-nozzles of diameter 200 μ m and is positioned at these a plurality of spinning-nozzles both sides; Attract cylinder, its be located at described wire guiding nipple near, have porous peripheral part; A pair of attraction cover, it is located at the upstream side of described wire guiding nipple and the position in downstream in the mode that covers described attraction cylinder,
In the method, use described device for melt blowing, to extend from the hot-air that adds that described air nozzle sprays from the molten polymer utilization of described spinning-nozzle ejection, the superfine fibre of the described polymer that obtains trapped attract on the cylinder, make thus by below the number average fibre diameter 1 μ m, the melt spraying non-woven fabrics that consists of of distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) below 1.3, the superfine fibre of the fibre diameter rate of change below 55%
The manufacture method of the described melt spraying non-woven fabrics that is made of superfine fibre is characterised in that,
(1) extension that the interval between described wire guiding nipple and the described attraction cylinder is set in described molten polymer finish and the in fact not vibrative scope of described polymer fiber that obtains in; (2) even be set as the interval between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover in the surface attachment of the melt spraying non-woven fabrics that obtains or contact in the scope that the fiber of fracture of wire also can attract to remove.
2. the manufacture method of the melt spraying non-woven fabrics that is made of superfine fibre according to claim 1 is characterized in that,
Be spaced apart 30～100mm between described wire guiding nipple and the described attraction cylinder.
3. the manufacture method of the melt spraying non-woven fabrics that is made of superfine fibre according to claim 1 and 2 is characterized in that,
Be spaced apart 10～40mm between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover.
4. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～3,
The spray volume of the molten polymer of each described spinning-nozzle is below 50mg/ minute, and the described ejection flow velocity that adds hot-air is that 100m/ is more than second.
5. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～4,
Ratio in half side face of the described wire guiding nipple side of described attraction cylinder, that covered lid by described a pair of attraction is 60～90%.
6. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～5,
The attraction zone of described attraction cylinder is 1/6～1/3 with respect to the area ratio of outer peripheral face.
7. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～6,
The described spray volume that adds hot-air of per unit width is 800Nm
3More than/the hr/m, the traffic attraction of described attraction cylinder is described more than 5 times of spray volume that add hot-air, and the total traffic attraction of described a pair of attraction cover is 0.2～0.9 with the ratio of the traffic attraction of described attraction cylinder.
8. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～7,
Described wire guiding nipple and the described temperature that adds hot-air are (fusing point of described polymer)～(fusing point of described polymer+50 ℃).
9. the manufacture method of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 1～8,
As described polymer, use the moving speed of melt (JISK7210,230 ℃, load 2, polypropylene 160g) with 1,000～2,000g/10 minute.
10. the manufacturing installation of a melt spraying non-woven fabrics that is consisted of by superfine fibre, the number average fibre diameter of described superfine fibre is that 1 μ m is following, distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) is below 1.3, the fibre diameter rate of change is below 55%, described manufacturing installation is characterised in that
Have: wire guiding nipple, the air nozzle that it has the following a plurality of spinning-nozzles of diameter 200 μ m and is positioned at these a plurality of spinning-nozzles both sides; Attract cylinder, its be located at described wire guiding nipple near, have porous peripheral part; A pair of attraction cover, it is located at the upstream side of described wire guiding nipple and the position in downstream in the mode that covers described attraction cylinder, wherein,
(a) extension that is set as described molten polymer of the interval between described wire guiding nipple and the described attraction cylinder finish and the in fact not vibrative scope of described polymer fiber that obtains in, even (b) interval between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover is set as in the surface attachment of the melt spraying non-woven fabrics that obtains or contacts in the scope that the fiber of fracture of wire also can attract to remove.
11. the manufacturing installation of the melt spraying non-woven fabrics that is made of superfine fibre according to claim 10 is characterized in that,
Be spaced apart 30～100mm between described wire guiding nipple and the described attraction cylinder.
12. according to claim 10 or the manufacturing installation of the 11 described melt spraying non-woven fabrics that consisted of by superfine fibre, it is characterized in that,
Be spaced apart 10～40mm between the wire guiding nipple side end of the outer peripheral face of described attraction cylinder and described attraction cover.
13. the manufacturing installation of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 10～12,
Ratio in half side face of the described wire guiding nipple side of described attraction cylinder, that covered lid by described a pair of attraction is 60～90%.
14. the manufacturing installation of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 10～13,
The attraction zone of described attraction cylinder is 1/6～1/3 with respect to the area ratio of outer peripheral face.
15. the manufacturing installation of each described melt spraying non-woven fabrics that is made of superfine fibre is characterized in that according to claim 10～14,
Described spinning-nozzle sets row with per 1 inch density more than 50 at described wire guiding nipple.
16. a melt spraying non-woven fabrics is characterized in that,
Described melt spraying non-woven fabrics by the number average fibre diameter be below the 1 μ m, distribution of fiber diameters (weight average fibre diameter/number average fibre diameter) is below 1.3, the fibre diameter rate of change is that superfine fibre below 55% consists of.
17. melt spraying non-woven fabrics according to claim 16 is characterized in that,
Described number average fibre diameter is below the 0.7 μ m.
18. according to claim 16 or 17 described melt spraying non-woven fabrics, it is characterized in that,
Average cloth density is 12g/m
2Below, maximum fine pore and the average fine pore of utilizing the bubble point method to obtain are respectively below the 12 μ m and below the 6 μ m, and venting quality (JIS L 1096) is 5mL/cm
2More than/second.
19. each described melt spraying non-woven fabrics is characterized in that according to claim 16～18,
(JIS K 7210,230 ℃, load 2, polypropylene 160g) consists of superfine fibre by the moving speed of the melt with 1,000～2,000g/10 minute.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-017293 | 2011-01-28 | ||
| JP2011017293 | 2011-01-28 | ||
| PCT/JP2012/051887 WO2012102398A1 (en) | 2011-01-28 | 2012-01-27 | Melt-blown nonwoven fabric comprising ultra-fine fibers, production method therefor, and device for producing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103380242A true CN103380242A (en) | 2013-10-30 |
| CN103380242B CN103380242B (en) | 2016-03-02 |
Family
ID=46580961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280006732.0A Active CN103380242B (en) | 2011-01-28 | 2012-01-27 | The melt spraying non-woven fabrics be made up of superfine fibre, the manufacture method of this melt spraying non-woven fabrics and the device for the manufacture of this melt spraying non-woven fabrics |
Country Status (3)
| Country | Link |
|---|---|
| JP (2) | JP5905400B2 (en) |
| CN (1) | CN103380242B (en) |
| WO (1) | WO2012102398A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366089A (en) * | 2016-05-11 | 2017-11-21 | 松下知识产权经营株式会社 | Non-woven fabrics and sound-absorbing material |
| CN108883564A (en) * | 2016-10-17 | 2018-11-23 | Lg化学株式会社 | The method of synthetic resin long filament fracture of wire possibility from the rheological equationm of state of synthetic resin prediction melt-blown process |
| CN110892105A (en) * | 2017-11-30 | 2020-03-17 | 尤妮佳股份有限公司 | Method and apparatus for producing nonwoven fabric |
| CN112513358A (en) * | 2018-07-17 | 2021-03-16 | 连津格股份公司 | Method and device for separating solvent from process air in the production of spunbonded fabrics |
| CN113286645A (en) * | 2019-03-29 | 2021-08-20 | 特布楽丝株式会社 | Melt-blown nonwoven fabric for liquid filter, laminate of melt-blown nonwoven fabrics, and liquid filter provided with laminate |
| CN114867896A (en) * | 2019-12-18 | 2022-08-05 | 雅玛信过滤器株式会社 | Fiber aggregate |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014142126A1 (en) * | 2013-03-14 | 2014-09-18 | 株式会社立花商店 | Cleaning web, method for manufacturing melt blow nonwoven fabric, method for manufacturing cleaning web, image formation device and fixation device |
| CN105658253A (en) | 2013-10-18 | 2016-06-08 | 株式会社钟化 | Novel cell separation filter material and filter obtained by layering same |
| EP3060326B1 (en) * | 2013-10-21 | 2017-11-22 | E. I. du Pont de Nemours and Company | Electret nanofibrous web as air filtration media |
| US20150211160A1 (en) * | 2014-01-29 | 2015-07-30 | Biax-Fiberfilm | High loft, nonwoven web exhibiting excellent recovery |
| US10961644B2 (en) | 2014-01-29 | 2021-03-30 | Biax-Fiberfilm Corporation | High loft, nonwoven web exhibiting excellent recovery |
| JP2015190081A (en) * | 2014-03-28 | 2015-11-02 | 旭化成せんい株式会社 | Melt-blown nonwoven fabric |
| JP6457757B2 (en) * | 2014-07-28 | 2019-01-23 | 旭化成株式会社 | Meltblown nonwoven |
| KR102589330B1 (en) | 2014-09-05 | 2023-10-13 | 뉴 웨이 머신 컴포넌츠, 인코포레이티드 | Gas bearing, porous media vacuum roller and porous media air turn |
| CN107208338A (en) * | 2015-03-16 | 2017-09-26 | 东丽精细化工株式会社 | Non-woven fabrics and its manufacture method |
| JP6572072B2 (en) * | 2015-09-15 | 2019-09-04 | Ｊｘｔｇエネルギー株式会社 | Nonwoven fabric and air filter using the same |
| JP6675853B2 (en) * | 2015-10-13 | 2020-04-08 | 旭化成株式会社 | Optical sheet using extra-fine meltblown nonwoven fabric |
| JP6210422B2 (en) * | 2015-12-21 | 2017-10-11 | パナソニックＩｐマネジメント株式会社 | Fiber assembly |
| JP6546336B2 (en) * | 2016-02-16 | 2019-07-17 | 三井化学株式会社 | Nonwoven fabric, filter and method of manufacturing nonwoven fabric |
| TWI787190B (en) * | 2016-08-08 | 2022-12-21 | 日商東麗泛應化學股份有限公司 | Nonwoven fabric |
| KR20200047703A (en) | 2017-09-26 | 2020-05-07 | 미쓰이 가가쿠 가부시키가이샤 | Meltbloon non-woven fabric and filter |
| WO2019124408A1 (en) | 2017-12-21 | 2019-06-27 | 花王株式会社 | Meltblown non-woven fabric |
| JP6771012B2 (en) * | 2017-12-21 | 2020-10-21 | 花王株式会社 | Melt blow non-woven fabric |
| TW201929938A (en) | 2017-12-28 | 2019-08-01 | 日商三井化學股份有限公司 | Melt-blown nonwoven fabric, nonwoven fabric laminate, filter and manufacturing method of melt-blown nonwoven fabric |
| JP6511594B1 (en) | 2017-12-28 | 2019-05-15 | 三井化学株式会社 | Meltblown nonwoven fabric, filter, and method for producing meltblown nonwoven fabric |
| WO2019225466A1 (en) * | 2018-05-23 | 2019-11-28 | 東レ株式会社 | Cloth and method for manufacturing same |
| JP2020190057A (en) * | 2019-05-22 | 2020-11-26 | 旭化成株式会社 | Nonwoven fabric, laminate of nonwoven fabric, and filter including the same |
| JP7345044B2 (en) * | 2020-02-25 | 2023-09-14 | 富士フイルム株式会社 | Nonwoven fabric, nonwoven fabric manufacturing method |
| WO2022059413A1 (en) * | 2020-09-16 | 2022-03-24 | 株式会社カネカ | Calendered nonwoven fabric and method for producing same |
| CN113026205B (en) * | 2021-03-31 | 2022-06-10 | 东营俊富净化科技有限公司 | Anti-yellowing melt-blown fabric and preparation method thereof |
| CN118109964A (en) * | 2022-11-30 | 2024-05-31 | 财团法人纺织产业综合研究所 | Method for producing melt-blown fiber film |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2775959B2 (en) * | 1990-02-28 | 1998-07-16 | 東洋紡績株式会社 | Olefin-based ultra-fine fiber non-woven fabric |
| JPH07103508B2 (en) * | 1990-06-25 | 1995-11-08 | アキュレト・プロダクツ・カンパニー | Nonwoven web take-up method and device |
| JPH04163353A (en) * | 1990-10-19 | 1992-06-08 | Toyobo Co Ltd | Nonwoven fabric of olefin-based ultra-fine fiber |
| JP3491044B2 (en) * | 1991-10-02 | 2004-01-26 | 東洋紡績株式会社 | Method for producing polyolefin-based ultrafine fiber nonwoven fabric |
| JP3164172B2 (en) * | 1992-04-17 | 2001-05-08 | 東洋紡績株式会社 | Nonwoven fabric and method for producing the same |
| JPH07145542A (en) * | 1993-11-18 | 1995-06-06 | Kuraray Co Ltd | Production of melt blown nonwoven fabric of polyamide |
| GB9625634D0 (en) * | 1996-12-10 | 1997-01-29 | Courtaulds Fibres Holdings Ltd | Method of manufacture of nonwoven fabric |
| JP3951078B2 (en) * | 1998-05-27 | 2007-08-01 | 大日本インキ化学工業株式会社 | Polyarylene sulfide melt blown nonwoven fabric and method for producing the same |
| JP2002201560A (en) * | 2000-12-28 | 2002-07-19 | Mitsui Chemicals Inc | Polypropylene for ultrafine fiber melt-blown nonwoven fabric and nonwoven fabric and air filter each made therefrom |
| US6932923B2 (en) * | 2003-03-03 | 2005-08-23 | Arvin Technologies, Inc. | Method of making a melt-blown filter medium for use in air filters in internal combustion engines and product |
| WO2005098118A1 (en) * | 2004-04-09 | 2005-10-20 | Mitsui Chemicals, Inc. | Nonwoven fabric sheet and method for producing same |
| US10041188B2 (en) * | 2006-04-18 | 2018-08-07 | Hills, Inc. | Method and apparatus for production of meltblown nanofibers |
| CN1924136A (en) * | 2006-07-06 | 2007-03-07 | 谭亦武 | Spun-bonded method producing technology of non-woven fabrics from polyester recovering material |
| JP2009203580A (en) * | 2008-02-28 | 2009-09-10 | Toray Ind Inc | Electret melt-blown nonwoven fabric |
| JP2010125404A (en) * | 2008-11-28 | 2010-06-10 | Mitsui Chemicals Inc | Liquid filter |
| KR101457821B1 (en) * | 2010-07-29 | 2014-11-03 | 미쓰이 가가쿠 가부시키가이샤 | Non-woven fiber fabric, and production method and production device therefor |
-
2012
- 2012-01-27 CN CN201280006732.0A patent/CN103380242B/en active Active
- 2012-01-27 JP JP2012554874A patent/JP5905400B2/en active Active
- 2012-01-27 WO PCT/JP2012/051887 patent/WO2012102398A1/en active Application Filing
-
2016
- 2016-01-22 JP JP2016010746A patent/JP6078835B2/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366089A (en) * | 2016-05-11 | 2017-11-21 | 松下知识产权经营株式会社 | Non-woven fabrics and sound-absorbing material |
| CN108883564A (en) * | 2016-10-17 | 2018-11-23 | Lg化学株式会社 | The method of synthetic resin long filament fracture of wire possibility from the rheological equationm of state of synthetic resin prediction melt-blown process |
| CN108883564B (en) * | 2016-10-17 | 2020-07-17 | Lg化学株式会社 | Method for predicting filament breakage possibility of synthetic resin filament in melt-blowing process from rheological property of synthetic resin |
| US10976229B2 (en) | 2016-10-17 | 2021-04-13 | Lg Chem, Ltd. | Method for preparing a synthetic resin filament in a melt blowing process from rheological properties of the synthetic resin |
| CN110892105A (en) * | 2017-11-30 | 2020-03-17 | 尤妮佳股份有限公司 | Method and apparatus for producing nonwoven fabric |
| CN112513358A (en) * | 2018-07-17 | 2021-03-16 | 连津格股份公司 | Method and device for separating solvent from process air in the production of spunbonded fabrics |
| CN112513358B (en) * | 2018-07-17 | 2023-03-07 | 连津格股份公司 | Method and device for separating solvent from process air in the production of spunbonded fabrics |
| CN113286645A (en) * | 2019-03-29 | 2021-08-20 | 特布楽丝株式会社 | Melt-blown nonwoven fabric for liquid filter, laminate of melt-blown nonwoven fabrics, and liquid filter provided with laminate |
| CN114867896A (en) * | 2019-12-18 | 2022-08-05 | 雅玛信过滤器株式会社 | Fiber aggregate |
| CN114867896B (en) * | 2019-12-18 | 2024-03-01 | 雅玛信过滤器株式会社 | Fiber aggregate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6078835B2 (en) | 2017-02-15 |
| JP5905400B2 (en) | 2016-04-20 |
| CN103380242B (en) | 2016-03-02 |
| JP2016053241A (en) | 2016-04-14 |
| WO2012102398A1 (en) | 2012-08-02 |
| JPWO2012102398A1 (en) | 2014-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103380242A (en) | Melt-blown nonwoven fabric comprising ultra-fine fibers, production method therefor, and device for producing same | |
| US9970128B2 (en) | Process for laying fibrous webs from a centrifugal spinning process | |
| EP3060326B1 (en) | Electret nanofibrous web as air filtration media | |
| CN103933785B (en) | Nonwoven fabric for filter and manufacture method thereof | |
| US10456724B2 (en) | Melt spun filtration media for respiratory devices and face masks | |
| CN105002660B (en) | The manufacture method of melt-blowing nonwoven and the manufacture device of melt-blowing nonwoven | |
| JP5021740B2 (en) | Foldable mask with single component filtration / reinforcement single layer | |
| KR101422868B1 (en) | Molded monocomponent monolayer respirator with bimodal monolayer monocomponent media | |
| US20150111019A1 (en) | Electret nanofibrous web | |
| RU2700023C1 (en) | Method of producing corrugated textile material with electrostatically charged fibers and corrugated textile material | |
| JP2022149681A (en) | Manufacturing method of nonwoven fabric, filter, sound absorber, and melt-blown nonwoven fabric | |
| JP4069057B2 (en) | High performance air filter | |
| JP2017127832A (en) | Nonwoven fabric for filters | |
| WO2016081937A1 (en) | In-situ charging fiber spinning method for producing a nonwoven electret | |
| JP7473093B1 (en) | Spunbond nonwoven fabrics, filter media, air filters, and filter media manufacturing equipment | |
| WO2024116767A1 (en) | Spunbond nonwoven fabric, filter material, air filter, and method for producing filter material | |
| JP2008088610A (en) | Nonwoven fabric of dispersed ultrafine staple fibers and method for producing the same | |
| US11795593B2 (en) | Filter medium, filter element and use thereof and filter arrangement | |
| JP2009161889A (en) | Manufacturing equipment of spunbond web | |
| JP2024078778A (en) | Spunbond nonwoven fabrics, filter media, and air filters | |
| CN103228832B (en) | Melt-blowing nonwoven, its manufacture method and device | |
| JP2021063316A (en) | Melt-blown nonwoven fabric and method for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |