CN1201846A - Flexible spunbond unwoven fabric - Google Patents
Flexible spunbond unwoven fabric Download PDFInfo
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- CN1201846A CN1201846A CN98114716A CN98114716A CN1201846A CN 1201846 A CN1201846 A CN 1201846A CN 98114716 A CN98114716 A CN 98114716A CN 98114716 A CN98114716 A CN 98114716A CN 1201846 A CN1201846 A CN 1201846A
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- woven fabric
- nonwoven fabric
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
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Abstract
The present invention relates to a flexible spun-bonded nonwoven fabric using spun-bonded nonwoven fabric containing one or more layers comprising continuous long filament of a thermoplastic resin and partially hot-melting the fiber for increasing the flexibility and bulkiness that is suitable for medical materials and hygienic materials. This flexible spun-bonded nonwoven fabric is produced by partially hot-pressing a thermoplastic resin fiber having circular cross section, whose average fiber diameter is within the range of 10 to 50 micron and has 10 to 70 g/m<2>. The fiber constituting the nonwoven fabric is less than 3 per cm and non-crimp or crimp numbers and the fiber of non-heat pressing part has arc-like form . The spun-bonded nonwoven fabric may be a laminated nonwoven fabric obtained by laminating melt blow nonwoven fabric to spun-bonded nonwoven fabric or a laminated nonwoven fabric interposing melt blow nonwoven fabric between two layer spun bonded nonwoven fabrics.
Description
The present invention relates to flexible spunbond unwoven fabric, particularly relate to the spunbonded non-woven fabric that adopts the layer contain more than one deck that the continuous fiber by thermoplastic resin constitutes and part to form, can improve flexibility and bulkiness and applicable to the flexible spunbond unwoven fabric of medical material and hygienic material through heat bonding.
As former spunbonded non-woven fabric, be known that the layer that contains more than one deck that the continuous fiber by thermoplastic resins such as polyester, polypropylene, nylon constitutes, and carry out the arrangement of the bonding for example hot rolling of portion of hot line.The characteristic of the spunbonded non-woven fabric of putting in order as the hot rolling line can improve rare book density for (1), and (2) are suitable for goods that low order is paid, flexibility deficiency of (3) ABRASION RESISTANCE and excellent size stability (4) hot rolling line finishing part etc.Because above-mentioned characteristic, there is following present situation, Agricultural Materials, electric wire that the spunbonded non-woven fabric that the hot rolling line was put in order mainly is used as hygienic material, shading or the cover material (ベ Ga け カ-テ Application) etc. of paper nappy and physiological articles etc. clad material, filter, life sundry goods, packaging material etc., on the contrary, almost can not be used for requirement the medical material of flexibility and bulkiness, oil absorption material, dress material are arranged.
The spunbonded non-woven fabric that above-mentioned embossing finishing is crossed, aspect the characteristic except flexibility, with make comparisons with other made spunbonded non-woven fabric of for example acupuncture of other method for makings, water punching press, be not subjected to paying attention to especially, the intensity height, but because flexibility is not high, no matter in embossing portion, also be that non-embossing portion bulkiness is all not enough, therefore, its range of application is restricted.Though do not paid attention to, but the characteristic of the spunbonded non-woven fabric that the hot rolling line that intensity is high was put in order is very important in these ranges of application such as hygienic material, medical material, oil absorption material, dress material, and the market demand that keeps these characteristics and give its flexibility and bulkiness is strengthened.
As the bondedfibre fabric that the flexibility of the spunbonded non-woven fabric that this hot rolling line was put in order improves, the technical scheme (the special fair 4-29776 communique of Japan) that makes the fiber that constitutes bondedfibre fabric have special-shaped section and the bondedfibre fabric that is made of crinkled fibre is carried out the bulk spunbonded non-woven fabric of hot rolling line arrangement has been proposed.
Yet, in order to make this bondedfibre fabric, must be noted that the spinning head of special-shaped section, still, existing to increase the problem that there is negative effect the such economy of the technology that is used to crispatura and operating efficiency aspect.
Prior art in view of such the purpose of this invention is to provide flexible spunbond unwoven fabric, and it can keep the characteristic of spunbonded non-woven fabric of the heat bonding of hot rolling line arrangement etc., can be imbued with its flexibility again, and feel might as well.
Realize the flexible spunbond unwoven fabric of the object of the invention, it is characterized by, layer and part that employing contains more than one deck that the continuous fiber by thermoplastic resin constitutes are carried out the spunbonded non-woven fabric that heat bonding forms, specifically, the thermoplastic resin pars fibrosa that to the fiber diameter scope is the round section of 10～50 μ m carries out thermo-compressed, and forming that order pays is 10～70g/m
2Spunbonded non-woven fabric, the fiber that constitutes this bondedfibre fabric is the fiber of non-that crispatura or 3/cm of crimpling number less than, the fiber of unhot-pressing portion is an arc, and the beeline between thermo-compressed portion is more than the 0.5mm, the thickness (t of pressure contact portion
1) with the thickness (t of non-pressure contact portion
2) ratio (t
2/ t
1) be 12～100, flexing resistance is below the 70mm.
Fig. 1 is the sketch that is used for making the orthogonal flow pattern airflow treatment device of bondedfibre fabric of the present invention.
Fig. 2 is the sketch that is used for making the orthogonal flow pattern liquid flow processing device of bondedfibre fabric of the present invention.
Fig. 3 is the sketch that is used for making the parallel flow type airflow treatment device of bondedfibre fabric of the present invention.
Fig. 4 is the sketch that is used for making the parallel flow type airflow treatment device of bondedfibre fabric of the present invention.
The inventor for the result who solves above-mentioned problem and deliberately study is, carry out rear arrangement by the spunbonded non-woven fabric that the hot rolling line was put in order, for example comprise the rear processing of rubbing technique that the impact that caused by the air-flow in the following scope of thermoplastic resin fusing point more than 50 ℃ and liquid stream consists of, the characteristic of the spunbonded non-woven fabric that the hot rolling line was put in order same as before, its flexibility and bulkiness are given in discovery, so far, finish the present invention.
That is, according to the present invention, provide flexible spunbond unwoven fabric, be that the thermoplastic resin pars fibrosa of the round section of 10～50 μ m carries out thermo-compressed to the fiber diameter scope, it is 10～70g/m that the formation order is paid2Spunbonded non-woven fabric, the fiber that consists of this adhesive-bonded fabric is the fiber of non-that crispatura or 3/cm of crimpling number less than, the fiber of unhot-pressing section is arc, and the beeline between thermo-compressed section is more than the 0.5mm, the thickness (t of pressure contact portion1) with the thickness (t of non-pressure contact portion2) ratio (t2/t
1) be 12～100, flexing resistance is below the 70mm.
According to the present invention, flexible spunbond unwoven fabric is provided, spunbonded non-woven fabric layer and melt-blown nonwoven fabric layer are carried out lamination, part is carried out thermo-compressed, and it is 10～70g/m that the formation order is paid
2Stacked bondedfibre fabric, wherein, spunbonded non-woven fabric is the round section of 10～50 μ m by the fiber diameter scope and crispaturas or the thermoplastic resin fiber of 3/cm of crimpling number less than constitutes for non-that it is 5～50g/m that order is paid
2, and melt-blown nonwoven fabric layer is that the thermoplastic resin fiber of 0.5～8 μ m constitutes by the fiber diameter scope, it is 5～50g/m that order is paid
2, it is characterized by, the fiber of spunbonded non-woven fabric unhot-pressing portion is an arc at least, the beeline between thermo-compressed portion is more than the 0.5mm, the thickness (t of pressure contact portion
1) with the thickness (t of non-pressure contact portion
2) ratio (t
2/ t
1) be 12～100, flexing resistance is below the 70mm.
According to the present invention, carry out the back arrangement by spunbonded non-woven fabric to aforementioned portion of hot crimping, described back arrangement comprise be accompanied by the impact that causes by air-flow below the thermoplastic resin fusing point of raw material more than 50 ℃ or liquid stream and carry out rub technology, above-mentioned flexible spunbond unwoven fabric is provided.
The thermoplastic resin used as the raw material of spunbonded non-woven fabric of the present invention is for example polyolefin such as polyethylene, polypropylene, polybutene, polyester, nylon or polyethylene etc.Wherein, the good polypropylene of facile spinnability is better.In addition, the TPO of polyethylene and polypropylene etc. can make with polymerization, described polymerization adopts catalyst in the past such as Ziegler catalyst, also can adopt in addition and use the polymerization of the one-sided catalyst of representing aromatic ring alkene metal derivative to make, except seeking that spinnability is better and reducing cost, fibre diameter can be thinner, and the rigidity of the spunbonded non-woven fabric of gained also can diminish.
Thus, compare, have the advantage that anti-intensity can be big with the fiber of same diameter.
Spunbonded non-woven fabric is to form like this, makes continuous fiber by above-mentioned raw materials, forms layer by these continuous fibers.This layer is not limited to one deck, can be two-layer above multilayer.Particularly in the spunbonded non-woven fabric that is made of multilayer, the raw material of each layer can be different.
In addition, the fiber that forms spunbonded non-woven fabric is the fiber that is formed by single aforementioned hot moldable resin, it also can be the fiber of core/skin structure of constituting by the different two or more thermoplastic resins of fusing point, but at fiber is that concentric structure is preferably under the situation of core/skin structure fiber.
As the preparation method of spunbonded non-woven fabric, owing to can use known method own same as before like that, thereby omission is elaborated to it.
The fiber diameter scope of application of spunbonded non-woven fabric of the present invention is 10～50 μ m, and is particularly better during 15～30 μ m.Intensity decreases then during less than 10 μ m, if when surpassing 50 μ m, unsatisfactory is the tendency with damage flexibility and feel.In addition, this spunbonded non-woven fabric order scope of application of paying is 10～70g/m
2, 15～60g/m particularly
2The time more suitable.Order is paid not enough 10g/m
2Then intensity decreases if surpass 70g/m2, will have the tendency of damage flexibility and feel.
And, constituting the used fiber of bondedfibre fabric of the present invention and be non-crispaturaing or the fiber of 3/cm of crimpling number less than, the bondedfibre fabric that is made of this fiber also can provide flexible spunbond unwoven fabric, and this also is a key character of the present invention.
Spunbonded non-woven fabric of the present invention is because one side will keep necessary strength, one side will be given its flexibility, therefore be necessary to carry out the portion of hot crimping, its method is, heating is carved with the embossing roller and the polishing roll of arbitrary graphic pattern, can be used on the method for thermo-compressed therebetween and with the method for ultrasonic heat crimping.
At this moment, the beeline between the thermo-compressed portion of adjacency is necessary for more than the 0.5mm, is preferably more than the 0.8mm.This is during apart from not enough 0.5mm, and the fiber that constitutes this bondedfibre fabric will excessively fetter the on-woven object plane, even also can not give its enough flexibility by the back arrangement.
In addition, the fiber in the non-pressure contact portion of spunbonded non-woven fabric of the present invention is an arc, pressure contact portion thickness (t
1) with the thickness (t of non-pressure contact portion
2) ratio (t
2/ t
1) be 12～100, be preferably 15～70.This just can not give enough flexibilities and bulkiness during than less than 12, otherwise, if surpass at 100 o'clock, consequently exceedingly give its flexibility and bulkiness, will lose advantage as the spunbonded non-woven fabric of portion of hot crimping such as high strength.
The flexing resistance of spunbonded non-woven fabric of the present invention is below the 70mm.If flexing resistance surpasses 70mm, will lose flexibility, the result is unsuitable for hygienic material and medical material.
Other form of spunbonded non-woven fabric of the present invention is that spunbonded non-woven fabric and melt-blown nonwoven fabric layer are pressed and the formation composite nonwoven fabric.The fiber diameter scope of application of this spunbonded non-woven fabric layer is 10～50 μ m, and particularly 15～30 μ m are proper.Intensity decreases then during less than 10 μ m if surpass 50 μ m, the tendency of flexibility and feel will occur damaging.In addition, this spunbonded non-woven fabric order scope of application of paying is 5～50g/m
2, 5～40g/m particularly
2
The order of spunbonded non-woven fabric is paid not enough 5g/m
2Intensity decreases then is if surpass 50g/m
2, the tendency of flexibility and feel will appear damaging.The fiber that constitutes this spunbonded non-woven fabric is non-crispaturaing or the fiber of 3/cm of crimpling number less than.
As the thermoplastic resin as melt-blown nonwoven fabric for example is polyolefin such as polyethylene, polypropylene, polybutene, polyester, nylon or polystyrene etc.Wherein, the good polypropylene of facile spinnability is better.In addition, the TPO of polyethylene and polypropylene etc. can make with such polymerization, this polymerization adopts catalyst in the past such as Ziegler catalyst, also can adopt the another kind of polymerization of the one-sided catalyst of representing aromatic ring alkene metal derivative of using to make, except spinnability is better seek to reduce cost, fibre diameter can be thinner, and the rigidity of the spunbonded non-woven fabric of gained also can diminish.
Thus, compare, have the big advantage of tensile strength with the fiber of same diameter.
Melt-blown nonwoven fabric is to form like this, makes superfine fiber by above-mentioned raw materials, forms layer by this superfine fiber.This layer is not limited to one deck, can be two-layer above multilayer.And in the melt-blown nonwoven fabric that is made of multilayer, the raw material of each layer can be different.As the preparation method of melt-blown nonwoven fabric, owing to can use known method own same as before like that, thereby omission is elaborated to it.
The fiber diameter scope of application of this melt-blown nonwoven fabric layer is 0.5～8 μ m, and is particularly better during 0.5～5 μ m.Be difficult to spinning during less than 0.5 μ m,, have the tendency of damage flexibility and feel if when surpassing 8 μ m.In addition, this melt-blown nonwoven fabric order scope of application of paying is 5～50g/m
2, 5～30g/m particularly
2The time more suitable.Order is paid not enough 5g/m
2Intensity decreases then is if surpass 30g/m
2, will have the tendency of damaging flexibility and feel.
The scope of application that this composite nonwoven fabric order is paid is 10～70g/m
2, 20～60g/m particularly
2The time more suitable.Order is paid not enough 10g/m
2Intensity decreases then is if surpass 70g/m
2, will have the tendency of damaging flexibility and feel.
This composite nonwoven fabric is the composite nonwoven fabric of pressing spunbonded non-woven fabric and melt-blown nonwoven fabric layer the rear section hot joining to form, and still, the spunbonded non-woven fabric before the lamination can be with the part spunbonded non-woven fabric of hot joining in advance.
Other form of spunbonded non-woven fabric of the present invention is, between two-layer spunbonded non-woven fabric, accompany melt-blown nonwoven fabric and carry out the composite nonwoven fabric that lamination forms, the fiber diameter scope of application of this spunbonded non-woven fabric layer is 10～50 μ m, and is particularly better during 15～30 μ m.If intensity decreases then during less than 10 μ m when surpassing 50 μ m, has the tendency of damage flexibility and feel.
In addition, this spunbonded non-woven fabric order scope of application of paying is 5～40g/m
2, 5～30g/m particularly
2The time more suitable.Order is paid not enough 5g/m
2Intensity decreases then is if surpass 40g/m
2, will have the tendency of damaging flexibility and feel.And the fiber that constitutes this spunbonded non-woven fabric is non-crispaturaing or the fiber of 3/cm of crimpling number less than.
The fiber diameter scope of application of this melt-blown nonwoven fabric is 0.5～8 μ m, and is particularly proper during 0.5～5 μ m.During less than 0.5 μ m, owing to be difficult to spinning, be difficult to low-cost the manufacturing,, the tendency of flexibility and feel will occur damaging if when surpassing 8 μ m.
In addition, this melt-blown nonwoven fabric order scope of application of paying is 2～50g/m
2, 2～30g/m particularly
2The time proper.Order is paid not enough 2g/m
2Intensity decreases then is if surpass 50g/m
2, the tendency of flexibility and feel will appear damaging.
The scope of application that this composite nonwoven fabric order is paid is 12～100g/m
2, 12～70g/m particularly
2Be preferably.Order is paid not enough 12g/m
2Intensity decreases then is if surpass 100g/m
2, the tendency of damaging flexibility and feel will be arranged.
Back of the present invention arrangement is to comprise the back arrangement of rubbing technology, the described technology of rubbing is that spunbonded non-woven fabric to the portion of hot crimping carries out the impact that air-flow below the thermoplastic resin fusing point of raw material more than 50 ℃ or liquid stream causes and handles, during 50 ℃ of the temperature deficiencies of this air-flow or liquid stream, then the softnessization effect is just not so good, if surpass the fusing point of the thermoplastic resin of raw material, will this spunbonded non-woven fabric of fusion, the result just can not give its flexibility and bulkiness.
The technology use-case orthogonal stream treating apparatus as shown in Figure 1 of rubbing of the present invention that impact constituted that is caused by air-flow or liquid stream carries out.This airflow treatment device 1 is made of high-temperature high-pressure air flow generating unit and attraction portion, described attraction portion is made of suction box 9 and vavuum pump 10, described high-temperature high-pressure air flow generating unit is pressurizeed the air that is purified by filter 5 with compressor 6, then heating in heat exchanger 7 intermittently or is continuously sprayed from the jet 8 that has a plurality of pores then.
Spunbonded non-woven fabric 2 is transported towards the arrow A direction by driven roller 3, and imports in the high-temperature high-pressure air flow generating unit, then by from jet 8 intermittently or the impact of the high-temperature high-pressure air flow that sprays continuously carry out the softness processing.High-temperature high-pressure air flow is spent above angle with respect to spunbonded non-woven fabric with 45, or to be roughly the better angle effect in right angle, the outside discharge by porous plate or netted filtering net 4 from attraction portion towards device.This spunbonded non-woven fabric is wound on the work beam 11 by driven roller 3.
Attraction portion not necessarily still had better be provided with so that the air-flow effect is stronger.In addition, a plurality of high-temperature high-pressure air flow generating units and attraction portion are set, repeat air-flow and handle, perhaps as shown in Figure 1, carrying out the air-flow processing from the two sides of this bondedfibre fabric can more produce effect.
Another example use-case orthogonal flow liquid current processing device 21 as shown in Figure 2 of rubbing technology of the present invention that impact constituted that is caused by air-flow or liquid stream carries out.This liquid flow processing device 21 is made of high-temperature high-pressure liquid stream generating unit, attraction portion and drying section, described high-temperature high-pressure liquid stream generating unit is such: by the liquid of filter 5 purifications, generally be that water pressurizes in high-pressure pump 25, intermittently or continuously spray from jet 8 then with a plurality of pores.Described attraction portion is made of suction box 9, gas-liquid separator 22 and vavuum pump 10, and drying section purify by filter 5, with air blast supply gas, the air of heating in heat exchanger 7 imports in the drier 24 dry.
Spunbonded non-woven fabric 2 is imported in the high-temperature high-pressure liquids stream generating units by driven roller 3, then by from jet 8 intermittently or the impact of the high-temperature high-pressure liquid that sprays continuously stream carry out the softness processing.High-temperature high-pressure liquid stream, with respect to spunbonded non-woven fabric with the above angle of 45 degree, or being roughly the better angle effect at right angle, and by porous plate or netted screen pack 4, reclaim by gas-liquid separator 22 from suction box 9, import again afterwards in the filter 5 to recycle.This spunbonded non-woven fabric is imported in the drier 24 by driven roller 3, is wound on after the drying on the work beam 11.
The example again of rubbing technology of the present invention that impact constituted that is caused by air-flow or liquid stream carries out with concurrent flow airflow treatment device 31 shown in Figure 3.This airflow treatment device 2 is made of high velocity air handling part 35 and cloth and silk accumulation portion 37.This high velocity air handling part 35 is made of air-flow incident section 32, current path 34 and air flow jetting portion 33 that high velocity air takes place.And high velocity air handling part 35, cloth and silk accumulation portion 37 and driven roller 3 and free roller 36 are provided with like that by Fig. 3, all handle the cloth and silk stream and form annular passage 38.In device, the end of cloth and silk interconnected and circularize.
The air that is purified by filter 5 pressurizes in compressor 6, then heating in heat exchanger 7, become high temperature gas flow afterwards, this high temperature gas flow enters in the current path 34 from gas incident section 32, and deliver at a high speed in the current path 34 by the power that high velocity air 39 is produced, simultaneously, the spunbonded non-woven fabric 2 through soft finish is impacted.
Then, spunbonded non-woven fabric 2 is sent to cloth and silk accumulation portion through driven roller 3, is subjected to rubbing arrangement by being detained compression.By by power that aforementioned high velocity air produced through free roller again be sent to high velocity air handling part 35, carry out reprocessing thereafter.In this collating unit, the internal temperature in air channel 38 and gas flow temperature are usually in the temperature more than 50 ℃, below the thermoplastic resin fusing point of raw material.
Undertaken by concurrent flow airflow treatment device 41 shown in Figure 4 by other form of rubbing technology that impact constituted that air-flow or liquid stream cause.This airflow treatment device 41 is made of high-temperature injection stream generating unit 42, low voltage section and carry-over pinch rolls 44, wherein, high-temperature injection stream generating unit 42 is pressurizeed the air that is purified by filter 5 in compressor 6, then heating in heat exchanger 7, resemble the structure for example pneumatic injector, low voltage section is made of diffusion chamber 43.
Spunbonded non-woven fabric 2 imports in the high-temperature injection flow-generator by driven roller 3, and together sprays in the low pressure diffusion chamber with high speed with high-temperature injection stream, and the softness processing is carried out in the impact in the time of thus.Reclaim air-flow, import to again in the filter 5, to recycle.This bondedfibre fabric is drawn by carry-over pinch rolls 44, and is wound on the work beam 11.Be preferably, a plurality of high-temperature injection flow-generator, the low voltage section of diffusion chamber formation and devices that carry-over pinch rolls constitute as shown in Figure 4 are set, if repeat aforesaid operations, will be more effective.
According to the present invention, because the spunbonded non-woven fabric to heat bonding carries out the back arrangement, thereby can keep the original characteristic that has of this bondedfibre fabric, can obtain being rich in flexibility again and increase its bulkiness, feel might as well flexible spunbond unwoven fabric, so far, can remedy shortcoming because of the not enough unserviceable various uses of flexibility.For example can be widely used in medical clothes, the hygienic material of paper nappy upper strata thin slice; Packaging material such as bathing pool liner; Household supplies such as tablecloth and rag, cleaning piece etc.
Embodiment
It is following that the present invention will be described according to embodiment.
This embodiment is for embodiment preferably of the present invention being described, being not limited to this under the situation that does not exceed main points of the present invention.
The following determination method of the experimental evidence of each rerum natura in embodiment and the comparative example.
Fusing point: DSC (differential calorimeter)
Melt and spray speed: ASTM D1238 method (230 ℃ of test temperatures)
Order is paid: JIS L 1096
Thickness: enlarge the range estimation mensuration (50 times of magnifying powers) that description is carried out with electron microscope;
Tensile strength: JIS L 1096 A methods (slitting determination method);
Tearing strength: JIS L 1096 A-1 methods (single tongue formula test method(s));
Gas permeability: JIS L 1096 A methods;
Fastness to water: the hydrostatic platen press of JIS L 1092 A methods (low hydrostatic(al) process);
Flexing resistance: JIS L 1096 A methods (45 ° of cantilever methods).
Embodiment 1, comparative example 1
With (fusing point Tm:160 ℃ of polypropylene, melt and spray speed: the 35g/10 branch) make raw material, be fed in the extruder, fusion is mixed, be that 0.6mm φ, hole count are that the spinning head of 756 spinneret orifices carries out melt spinning with the emitted dose that every hole 0.66g/ divides from the aperture, forming fiber diameter is the long filament of 24 μ m, then, it is deposited on the collection face.Formation by hot rolling line roller to its carry out the portion of hot crimping spunbonded non-woven fabric (area occupation ratio of thermo-compressed portion: 18.3%, the beeline of thermo-compressed portion: 0.88mm).
This bondedfibre fabric as a comparative example 1, then impose soft finish by method shown in Figure 3.Finishing condition is: reach gas flow temperature in the device: 120 ℃, pressure: 0.3MPa handles with the 800m/min air velocity, circulates 20 times.Various rerum naturas to the spunbonded non-woven fabric of its soft finish are measured, and it the results are shown in the table 1.
Respectively by polypropylene (spun-bonded type PP; Fusing point Tm:160 ℃, melt and spray speed: the 35g/10 branch, and melt and spray and use PP; Tm:159 ℃, melt and spray speed: the 700g/10 branch) three layers of spun-bonded type/melt-blowns of Gou Chenging/spun-bonded type are by hot rolling line roller segment thermo-compressed, make stacked bondedfibre fabric (area occupation ratio of thermo-compressed portion: 17.5%, the beeline of thermo-compressed portion: 1.25mm).
Form spunbonded non-woven fabric under the condition identical with embodiment 1, the order amount of paying is adjusted to roughly 20g/m
2Melt-blown nonwoven fabric is that 0.51mm φ hole count is that the spinning head of 2130 spinneret orifice carries out melt spinning with the emitted dose that every hole 0.17g/ divides from having the aperture in addition, simultaneously, uses 1270Nm
3The high temperature air in/time carries out refinement, is the net of 3 μ m thereby form fiber diameter, and the order amount of paying is adjusted to roughly 20g/m
2The composite nonwoven fabric that forms so as a comparative example 2, under the condition identical, handle this composite nonwoven fabric with embodiment 1.Various rerum naturas through this composite nonwoven fabric of soft finish are measured, and it the results are shown in the table 1.
With the electron microscope visual assessment of drawing a portrait, the unhot-pressing portion fiber of spunbonded non-woven fabric, opposite with the fiber of the shape that is in line in the comparative example 1,2 of soft finish product not, be mild arc among the embodiment 1,2 of soft finish.
Table 1
| The assessment item test portion | Embodiment 1 | Embodiment 2 | Comparative example 1 | Comparative example 2 | ||
| Former antistructure * | The S individual layer | ???S/M/S | The S individual layer | ???S/M/S | ||
| Order is paid (g/m 2) | ????41.6 | ????63.8 | ????38.3 | ????62.9 | ||
| Thickness | Non-pressure contact portion: t 2 | ????0.62 | ????0.83 | ????0.28 | ????0.39 | |
| Pressure contact portion: t 1 | ????0.03 | ????0.04 | ????0.03 | ????0.04 | ||
| Thickness is than (t 2/t 1) | ????21 | ????21 | ????9 | ????10 | ||
| Tensile strength | Maximum intensity [N/5cm] | Vertical | ????100 | ????127 | ????92 | ????130 |
| Horizontal | ????54 | ????37 | ????57 | ????33 | ||
| Percentage elongation [%] | Vertical | ????39 | ????28 | ????55 | ????27 | |
| Horizontal | ????50 | ????44 | ????58 | ????45 | ||
| Tearing strength [N] | Vertical | ????16 | ????16 | ????14 | ????15 | |
| Horizontal | ????15 | ????14 | ????16 | ????13 | ||
| Gas permeability [cm 3/(cm 2).S] | ????227 | ????33 | ????210 | ????26 | ||
| Fastness to water [Pa] 1180 | ????1180 | ????4510 | ????1370 | ????6380 | ||
| Flexing resistance is indulged/horizontal [mm] | ????56/40 | ????63/34 | ????97/63 | ????86/42 | ||
S: spunbonded non-woven fabric
M: melt-blown nonwoven fabric
As obviously finding out from table 1, spunbonded non-woven fabric of the present invention and comparative example l, 2 compare, its tensile strength, tearing strength almost do not change, the fastness to water of the impermeability of expression bondedfibre fabric reduces also less, relative therewith, flexing resistance becomes big towards soft direction, represents that the thickness of bulkiness is also very thick.
Claims (4)
1, flexible spunbond unwoven fabric wherein, is that the thermoplastic resin pars fibrosa of the circular cross section of 10～50 μ m carries out thermo-compressed to the fiber diameter scope, and forming that order pays is 10～70g/m
2Spunbonded non-woven fabric, it is characterized by, the fiber that constitutes this bondedfibre fabric is the fiber of non-that crispatura or 3/cm of crimpling number less than, the fiber of unhot-pressing portion is an arc, and the beeline between thermo-compressed portion is more than the 0.5mm, pressure contact portion thickness (t
1) and non-pressure contact portion thickness (t
2) ratio (t
2/ t
1) be 12～100, flexing resistance is below the 70mm.
2, flexible spunbond unwoven fabric carries out lamination and portion of hot crimping to spunbonded non-woven fabric layer and melt-blown nonwoven fabric, and it is 10～70g/m that the formation order is paid
2Stacked bondedfibre fabric, wherein, described spunbonded non-woven fabric is the circular cross section of 10～50 μ m and for the thermoplastic resin fiber of non-that crispatura or 3/cm of crimpling number less than constitutes, it is 5～50g/m that order is paid by the fiber diameter scope
2, and melt-blown nonwoven fabric is that the thermoplastic resin fiber of 0.5-8 μ m constitutes by the fiber diameter scope, it is 5～50g/m2 that order is paid, it is characterized in that, at least the fiber of the unhot-pressing portion of spunbonded non-woven fabric is an arc, and the beeline between thermo-compressed portion is more than the 0.5mm, pressure contact portion thickness (t
1) and non-pressure contact portion thickness (t
2) ratio (t
2/ t
1) be 12～100, flexing resistance is below the 70mm.
3, flexible spunbond unwoven fabric accompanies melt-blown nonwoven fabric layer at two interlayers of spunbonded non-woven fabric layer, carries out lamination, and part is carried out thermo-compressed, and forming that order pays is 12～100g/m
2Stacked bondedfibre fabric, wherein, described spunbonded non-woven fabric layer is the circular cross section of 10～50 μ m and for the thermoplastic resin fiber of non-that crispatura or 3/cm of crimpling number less than constitutes, it is 5～40g/m that order is paid by the fiber diameter scope
2, and melt-blown nonwoven fabric is that the thermoplastic resin fiber of 0.5-8 μ m constitutes by the fiber diameter scope, it is 2～50g/m that order is paid
2, it is characterized in that the fiber of the unhot-pressing portion of spunbonded non-woven fabric is an arc at least, the beeline between thermo-compressed portion is more than the 0.5mm, pressure contact portion thickness (t
1) and non-pressure contact portion thickness (t
2) ratio (t
2/ t
1) be 12～100, flexing resistance is below the 70mm.
4, according to any one described flexible spunbond unwoven fabric of claim 1～3, the spunbonded non-woven fabric of aforementioned portion of hot crimping is carried out the back arrangement, this back arrangement comprise be accompanied by more than 50 ℃, impact that the air-flow below the thermoplastic resin fusing point of raw material or liquid stream cause and carry out rub technology.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP89366/97 | 1997-04-08 | ||
| JP9089366A JPH10280267A (en) | 1997-04-08 | 1997-04-08 | Flexible spun-bonded nonwoven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1201846A true CN1201846A (en) | 1998-12-16 |
Family
ID=13968714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98114716A Pending CN1201846A (en) | 1997-04-08 | 1998-04-08 | Flexible spunbond unwoven fabric |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH10280267A (en) |
| KR (1) | KR19980081186A (en) |
| CN (1) | CN1201846A (en) |
| TW (1) | TW384325B (en) |
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- 1997-04-08 JP JP9089366A patent/JPH10280267A/en active Pending
-
1998
- 1998-03-27 TW TW087104648A patent/TW384325B/en not_active IP Right Cessation
- 1998-04-08 CN CN98114716A patent/CN1201846A/en active Pending
- 1998-04-08 KR KR1019980012372A patent/KR19980081186A/en not_active Application Discontinuation
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Also Published As
| Publication number | Publication date |
|---|---|
| TW384325B (en) | 2000-03-11 |
| KR19980081186A (en) | 1998-11-25 |
| JPH10280267A (en) | 1998-10-20 |
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