CN104278433A - A hydroentangled nonwoven material - Google Patents
A hydroentangled nonwoven material Download PDFInfo
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- CN104278433A CN104278433A CN201410260490.9A CN201410260490A CN104278433A CN 104278433 A CN104278433 A CN 104278433A CN 201410260490 A CN201410260490 A CN 201410260490A CN 104278433 A CN104278433 A CN 104278433A
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- Prior art keywords
- nonwoven material
- synthetic staple
- fiber
- continuous filament
- fabric
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Classifications
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
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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
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
- D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4266—Natural fibres not provided for in group D04H1/425
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
Abstract
The invention teaches an improved hydroentangled well integrated composite nonwoven material, comprising a mixture of continuous filaments, synthetic staple fibres, and natural fibres which has a reduced twosidedness and an improved textile feeling. The synthetic staple fibres should have a length of 3 to 7 nm, and preferably there should be no thermal bondings between the filaments. The invention also teaches a method of producing such a nonwoven material. The nonwoven comprises a mixture of 10-50 w-% continuous filaments preferably chosen from polypropylene, polyesters and polylactides, 5-50 w-% synthetic staple fibres chosen from polyethylene, polypropylene, polyesters, polyamides, polylactides, rayon, and lyocell, and 20-85 w-% natural fibres, preferably pulp. The continuous filaments should preferably be spunlaid filaments. Some of the staple fibres and/or pulp can be coloured.
Description
The application is the divisional application that the name submitted to for 2004/10/21st is called No. 200480030704.8 applications of " hydroentangled nonwoven material ".
Technical field
The present invention relates to the composite nonwoven material that a kind of hydroentangled good combination is integrated, described composite nonwoven material comprises by continuous filament yarn, synthetic staple, and the mixture of natural fabric composition.
background of invention
Absorbent nonwoven materials is usually used for wiping examination various overflow and sewing in industry, service industry, office and family place.Main synthetic plastic component is normally hydrophobic, and absorbs oil, fat and lubricating grease, and also absorbs water by capillary force to a certain extent.In order to reach higher water suction grade, usually add cellulose slurry.On the nonwoven material wiping examination object, many requirements are had to obtained.Desirable wiping examination device should be firm, have absorbability, wear-resisting and show low fluffing.In order to replace the textiles being still market major part to wipe examination device, they should be also soft and have the sense of touch of textiles.
The nonwoven material comprising cellulose slurry and synthetic fiber mixture can be produced with conventional paper technology, see such as US Patent No. 4822452, the patent describe the fiber web that a kind of wet-laid processes is formed, described fiber web comprises the natural fabric of staple length or synthetic fiber and lignocellulose paper fibre, wherein in batching, adds relevant thickener.
Water stings into net method or jet becomes net method to be a kind of technology introduced at 20 century 70s, sees such as Canadian Patent No.841938.The method comprises a kind of fiber web of formation, and described fiber web is dry-laying or wet-laying, under high pressure makes fibre matting after this with very thin water jet.By some draining jet aligned fibers nets, described fiber web is by the textile support of a motion.Then by dry for the fiber web tangled.The fiber used in the material can be the mixture of staple fibre, the such as polyester of synthesis or regeneration, polyamide, polypropylene, artificial fibre (rayon) or like this, slurry fiber or slurry fiber and staple fibre.Jet becomes net materials with high quality of production under rational cost, and can have very high absorbability.They such as can be used as family or industrial wiping material, as in medical treatment and nursing and for the disposable material of health object etc.
A kind of fibroreticulate water thorn of foam forming is disclosed in WO96/02701.Foaming process is a kind of particular variation of wet-laying, herein in water except containing except fiber and chemicals, also make it form foam containing a kind of surfactant, fiber can be entangled in the bubble of foam or between bubble.The fiber comprised in fiber web can be slurry fiber and other natural fabric and synthetic fiber.
Disclosed by such as European patent EP-B-0333211 and EP-B-0333228 and a kind of fibre blend water is stung into net, wherein a kind of fibre composition is made up of meltblown fibers, and described meltblown fibers is a type of spunlaid filaments.Base material, that is be applied to water and sting into fibrous material in net method, or be made up of at least two preformed fibrages of combined type, or be made up of a kind of " altogether moulding material (coform materid) ", in the preformed fibrage of above-mentioned at least two combined types, at least one deck is made up of meltblown fibers, and above-mentioned " altogether moulding material " mainly by the homogeneous mixture of meltblown fibers and other fiber by air lay on a forming fabric.
Being disclosed by European patent EP-A-0308320 makes the pre-bonded net of continuous filament yarn put together with the wet laid cellulose material containing slurry fiber and staple fibre separating pre-bonded, and this fiber web separately formed together water is stung into net becomes a kind of laminate.In this material, different fibroreticulate fiber does not be combined with each other, because fiber mutually bonded before water stings into net, and only has limited activity.Material will show obvious dual character.It is 12-19mm that staple fibre used has a preferred length, but can be within the scope of 9.5mm-51mm.
In hydroentangled material clear see a problem-they often have significant dual character, that is can clearly debate do not go out in winding step towards the side of fabric and towards water jet side between difference.In some cases, this is used as a kind of favourable decorative pattern, but in most of the cases it is counted as a shortcoming.When the layer that two are separated combines and sends in entanglement process process, this processing step can not make each layer fully mix usually, but these layers still exist, although be mutually bonded together.There is slurry fiber in compound, then by having the side of being rich in slurry fiber and the poor side of slurry fiber, will the different performance of both sides be caused like this.When using spunlaid filaments, just running into this situation, because they will easily form a kind of flat two-dimensional layer when created, mixing will be made so very poor.Some manufacturer attempts first add a cover layer from side and tangle, and then by fiber web upset and add another cover layer from opposite side and tangle, but most fiber moves and occurs very early in entanglement process process, and this more complicated mode does not solve this problem completely.
When using filament web in hydroentangled material, another problem has little free-fiber end, because long filament is do not have end in principle, and only has staple fibre and slurry fiber to contribute to this.Especially polymer fiber end is only and makes material have textile feel by their deliquescing effect.The slurry fiber often used in the composite has many free ends, but because they are bonded in hydrogen bond, so they do not produce contribution to the textile feel of softness; On the contrary, they will make final material feel more stiff.Therefore, in order to obtain a kind of textile material of softness, importantly there is the textile material of high percentage, that is the staple fibre of synthesis.
Summary of the invention
The composite nonwoven material that the hydroentangled good combination that the object of this invention is to provide a kind of improvement is integrated, described composite nonwoven material comprises the mixture be made up of continuous filament yarn, synthetic staple and natural fabric, this nonwoven material has a dual character decreased, that is both sides have similar outward appearance and performance.
The composite nonwoven material that the hydroentangled good combination that a further object of the invention is to provide a kind of improvement is integrated, described composite nonwoven material comprises the mixture be made up of continuous filament yarn, synthetic staple and natural fabric, and described mixture has a kind of textile feel of improvement.
This obtains by providing this hydroentangled nonwoven material according to the present invention, and synthetic staple has a length is herein 3-7mm.The fiber that fiber used before Selection radio is shorter makes slurry fiber and staple fibre mix better, and is fully distributed in whole nonwoven material.
Between long filament, do not have heat bonding according to preferred material of the present invention, this will guarantee that long filament stings into motion before net method bonds completely at them by water and has larger initial flexibility, thus make staple fibre and slurry fiber more fully be mixed in filament web.
Comprise the mixture containing 10-15% continuous filament yarn, 5-50% synthetic staple and 20-85% natural fabric according to preferred material of the present invention, above-mentioned percentage all gets by nonwoven material total weight.A kind of preferred material has 15-35% continuous filament yarn.Synthetic staple more preferably also containing 5-25%.It is even more preferred that containing 40-75% natural fabric.
That continuous filament yarn is wherein spunlaid filaments according to preferred material of the present invention.
That continuous filament yarn is wherein selected from this group of polypropylene, polyesters and polyactide class according to preferred material of the present invention.
That in compound wherein, the basis weights of continuous filament fibers mesh portions is 40g/m at the most according to preferred material of the present invention
2, and more preferably 30g/m at the most
2.
That synthetic staple is wherein selected from this group of polyethylene, polypropylene, polyesters, polyamide-based, polyactide class, artificial fibre (rayon) and Lyocell fibre according to preferred material of the present invention.
That synthetic staple at least partially is wherein painted, accounts at least 3% of supatex fabric gross weight, preferably accounts at least 5% according to preferred material of the present invention.
That natural fabric is wherein made up of slurry fiber, is more preferably made up of wood pulp fibre according to preferred material of the present invention.
That natural fabric at least partially is wherein painted, accounts at least 3% of supatex fabric gross weight, preferably accounts at least 5% according to preferred material of the present invention.
Especially, when using painted staple fibre or natural fabric, can be easy to go out two faced respectively and reducing.
The textile feel that the staple fibre end of stretching out from nonwoven material both sides will make surface have improvement.
Another object of the present invention is to provide a kind of method of producing the hydroentangled good combination all-in-one-piece composite nonwoven material of improvement, described composite nonwoven material comprises the mixture be made up of continuous filament yarn, synthetic staple and natural fabric, described mixture has the dual character reduced, that is both sides should have similar outward appearance and performance, and there is the textile feel of improvement.
This reaches by providing a kind of method according to the present invention, said method comprising the steps of: on a forming fabric, form continuous filament fibers net; And the wetlaid fibers webs dispersion containing synthetic staple and natural fabric is applied (apply) on the top of above-mentioned continuous filament yarn, form the fiber web containing above-mentioned continuous filament yarn, synthetic staple and natural fabric like this; And subsequently fiber web water is stung into net, to form nonwoven material, synthetic staple has length is herein 3-7mm, preferably 4-6mm.
The preferred alternative plan of the inventive method does not apply any thermal bonding technology step based on to continuous filament yarn.
Other preferred alternative plans of the inventive method are the fiber types based on using percentage by weight as described in claim 1-10.
Accompanying drawing explanation
Some embodiments below with reference to accompanying drawings more at large illustrate the present invention.
Fig. 1 schematically shows the exemplary embodiment for the production of the device according to a kind of hydroentangled nonwoven material of the present invention.
Fig. 2 illustrates the ABRASION RESISTANCE of three kinds of compound both sides with different staple length with fibre length array diagram form.
Fig. 3 illustrates the L* brightness value of two kinds of compound both sides with different staple length with fibre length array diagram form.
Fig. 4 illustrates the B* colour of two kinds of compound both sides with different staple length with fibre length array diagram form.
Detailed description of the invention
The hydroentangled good combination all-in-one-piece composite nonwoven material of improvement comprises the mixture be made up of continuous filament yarn, synthetic staple and natural fabric.These dissimilar fibers are described in detail as follows.
long filament
Long filament is that some length compared with their diameters are very long, is the fiber of infinite length in theory.They can be produced by following method: melted by thermoplastic polymer and be extruded through thin nozzle, after this preferably by making polymer cool at polymer flow place along the airflow function that described polymer flow blows, and be solidified into single thread, described single thread by hot candied (drawing), can stretch (stretching) or flexing (crimping) process.The chemicals being used for additional function can be added on the surface.
Long filament can also enter the chemical reaction of reaction medium by the reactant solution forming fiber, enter sulfuric acid produce as by the viscose fiber spinning of being made by xanthate cellulose.
The following method of meltblown filament is produced: by the thermoplastic polymer of melting being extruded through the polymer flow that thin nozzle becomes very thin, and the air-flow of convergence is blown towards polymer flow, so that by they hot candied continuous filament yarns becoming to have very minor diameter.Meltblown produces such as existing explanation in United States Patent (USP) 3849241 or 4048364.Fiber can be microfibre (microfibre) or crude fibre (macrofibre) according to their size.Microfibre has the diameter reaching 20 μm, normally 2-12 μm.Crude fibre has the diameter more than 20 μm, normally 20-100 μm.
Spun-bonded continuous yarn similar approach is produced, but air-flow is cooling agent, and the stretching of long filament is undertaken by air, to obtain suitable diameter.Fibre diameter usually more than 10 μm, normally 10-100 μm.The production of spun-bonded continuous yarn is such as illustrated in United States Patent (USP) 4813864 or 5545371.
Spun-bonded continuous yarn and meltblown filament are referred to as spunlaid filaments (spunlaid filaments) as one group, the meaning refers to that this net bonds in further production process to form fiber web on the surface that they are directly laid in a movement at the scene.Controlling " melt flow index " by selective polymer and state of temperature is the pith controlling extrusion molding, because of but control the pith of long filament formation.Spun-bonded continuous yarn normally intensity stronger and evenly.
Tow is another source of long filament, above-mentioned tow normally staple fibre produce in predecessor, but himself is also as production marketing and use.By the method identical with spunlaid fibres, thin polymer flow is hot candied and stretch, but be not be laid in movement surface on form fiber web, but they are held in a branch of, finally to complete wire drawing and stretching.When producing staple fibre, this beam filament is then with the process of spinning surface process chemicals, normally flexing, and then send into a cutting stage, in the described cutting stage, the wheel of belt cutter cuts into different fibre lengths by long filament, and the fiber packing of described different length becomes parcel post, to load and transport and to be used as staple fibre.When producing tow, when being with or without spinning surface process chemicals, endless tow being packaged into parcel post or being packaged in case.
Any have enough consistent performances to allow its self thermoplastic polymer hot candied in this way in the molten state, can be used in principle producing meltblown fibers or spun-bonded fibre.Some examples of useful polymer are TPO, as polyethylene and polypropylene, polyamide-based, polyesters and polyactide class.The copolymer of these polymer above-mentioned can certainly be used, and there is the natural polymer of thermoplastic properties.
natural fabric
There is perhaps eurypalynous natural fabric to use, especially there are those fibers of water absorbing capacity and the trend contributing to producing consistent thin layer.In operable natural fabric, mainly contain cellulose fibre class as seed hair fiber, such as cotton, kapok and milkweed fibre; Leaf fibre class, such as sisal hemp, abaca, pina fibre and New Zealand flax; Or bast fiber class, such as flax, castor-oil plant, jute, mestha and paper pulp.
The especially very applicable use of wood pulp fibre, and both cork fibrous and hardwood fiber are all suitable, can also use regenerated fiber.
Slurry fiber length by from the about 3mm of cork fibrous and the about 1.2mm of hardwood fiber, and the mixing of the above-mentioned length of regenerated fiber and even shorter between change.
staple fibre
Staple fibre used can be produced with the material identical with above-mentioned long filament and by identical technical process.Other available staple fibre is as viscose fiber and Lyocell fibre are made with regenerated cellulose.
They can use spin finish and flexing process, but for being preferably used for producing the technical process type of material of the present invention, this is unnecessary.
Usual increase spin finish and flexing process, easily to process fiber in dry method, such as combing, and/or give following material some performance, such as hydrophily, and above-mentioned material is only fibrous by these, such as the non-woven top laminate of diaper.
Usually carry out the cutting of fibre bundle, to produce single Cutting Length, above-mentioned Cutting Length can be changed by the distance changed in cutting wheel between each blade.According to planned use, for heat bonding nonwoven, the different fibre length of use is between 25-50mm.Wet-laying water thorn formula nonwoven uses 12-18mm usually, or is low to moderate 9mm.
For the water thorn formula material made by traditional wet laid technique, the intensity of material and performance thereof increase along with fibre length as surface abrasion resistance and increase (for same fineness and fibre-forming polymer).When continuous filament yarn uses together with slurry fiber with staple fibre, the intensity of material is mostly from long filament.
technical process
A kind of general embodiment for the production of the method according to material of the present invention is shown in Figure 1, and comprises the following steps:
The formation fabric 1 of one annular is provided, can lay continuous print long filament 2 on it, draw excess air, to form the predecessor of fiber web 3 through forming fabric;
The formation fabric with continuous filament yarn is made to proceed to the wet-laying stage 4, to the slurry wet-laying of natural fabric 5 and staple fibre 6 be comprised on predecessor's fiber web of continuous filament yarn at this place, and partly enter in above-mentioned predecessor fiber web, and get rid of excessive water through forming fabric;
Make to proceed to water with long filament with the formation fabric of fibre blend and sting into the net stage 7, closely mixed by the effect of many very thin high pressure water jet at this director's silk and fiber, and be adhered in nonwoven web 8, above-mentioned high pressure water jet impacts on fiber, to make them mutually mix and tangle, and discharge entanglement water through forming fabric;
Formation fabric is made to proceed to drying stage (not shown), the dry nonwoven web at this place;
And make nonwoven web proceed to the stages such as rolling, cutting, packaging further.
long filament ' fiber web '
According to the embodiment shown in Fig. 1, the continuous filament yarn 2 made with extruding molten thermoplastic sheet is directly laid in and is formed on fabric 1, can form at this place's continuous print long filament 2 fiber net structure 3 do not bonded, in described structure 3, long filament can move freely toward each other.This realizes more greatly preferably by making nozzle and the distance formed between fabric 1, so that long filament can cool down before being formed on fabric 1 at lay, at the temperature that this is lower, their adherence reduces greatly.Alternatively, long filament realizes with certain alternate manner to the cooling before being formed on fabric at their laies, such as utilizes multiple air-source to realize, wherein when by long filament wire drawing or when being stretched to preferred degree, air 10 is used for above-mentioned long filament to cool.
For the air of cooling, hot candied and elongate filaments through forming fabric suction, to allow long filament flow in the mesh of the formation fabric rested on there along with air.Good vacuum may be needed to carry out sucking-off air.
When they are laid on formation fabric, the speed of long filament is higher than the speed forming fabric a lot, and therefore long filament will form irregular ring, and bending when they are collected on formation fabric, to form one very randomized predecessor fiber web.
The basis weights of the long filament predecessor fiber web 3 formed should 2 and 50g/m
2between.
wet-laying
Slurry fiber 5 and staple fibre 6 conventional method slurrying, or mix, or first separate slurrying and then mix, and add conventional additive for paper making as wet and/or dry strength agents, retention agent, dispersant, to produce slurry fiber and the well-mixed slurry of staple fibre in water.
Being pumped into through the high-order head box 4 of wet-laying by this mixture is portablely formed on fabric 1, and the long filament lay moved freely with it at this place's mixture is in the predecessor's filament web 3 do not bonded.
Slurry fiber and staple fibre will rest on and be formed on fabric and long filament.Wherein a part of fiber enters between long filament, and most fiber will be docked on the top of filament web.
Utilize the fibre sucking case being arranged in and being formed below fabric, excessive water is drawn through the filament web be laid on formation fabric and forms fabric sucking-off with being passed down through.
tangle
The fiber web water that continuous filament yarn and staple fibre and slurry fiber are formed stings into net, and above-mentioned fiber web, still by forming textile support, and fully mixing and being bonded into composite nonwoven material 8 simultaneously.The guidance note of water thorn net-forming process process provides in Canadian Patent 841938.
Sting in the net stage 7 at water, by dissimilar fibre matting, and obtain composite nonwoven material 8, wherein all fibres type is substantially Homogeneous phase mixing and be combined with each other integral.Thin moveable spinning become net long filament around self with other torsion of fibers and with self and other fibre matting, like this produce a kind of material with very high strength.The energy supply of stinging into needed for net for water is lower, that is material is easy to tangle.Energy supply when water stings into net is it is suitable that within the scope of 50-500kwh/ ton.
Preferably, before slurry fiber 5 and staple fibre 6 lay, do not sting into net method by such as heat bonding or water and predecessor's filament web 3 is bonded.Long filament should be completely freely, can move relative to each other, thus staple fibre and slurry fiber can be made to mix during tangling and be torqued in filament web.At this part place of technical process, the thermal bond points in filament web between each long filament will play tamper effect, staple fibre and slurry fiber can be made to stop near these bounding points and snarl, because bounding point will make long filament keep fixing near heat seal point.Fibroreticulate " sieve effect " will strengthen, and result produces more two-way type material.By not heat bonding, we refer to the point that there is no and such as apply heat and pressure to long filament between each warm-up mill at the meaning, and a part of long filament is pressed together, so that these long filaments are softening and/or be fused together to be out of shape at contact point place.Some bounding point especially meltblowing adhesive point can be caused by the adherence remained when lapping, but these are not out of shape at contact point place, or distortion is very weak, so that ruptures under the impact of stinging water jet power into the net from water.
Much relations are had based on the amount only having the intensity of the hydroentangled material of staple fibre and slurry fiber with often kind of fibre matting point; Therefore long staple fibre and long slurry fiber are preferred.When using long filament, intensity mostly based on long filament, and reaches very rapidly when tangling.Therefore tangle can great majority will be used in the mixing of long filament and fiber, to reach good combination.The open design do not bonded according to long filament of the present invention considerably increases the easiness of this mixing.
Slurry fiber 5 is irregular, flat, distortion formulas and curling, and is flexible when wetting takes place.These performances allow them very easily mix and are entangled to and adhere to long filament and/or compared with in the fiber web of long and short fiber.Therefore slurry fiber can with the long filament of pre-bonded, even use together with the fiber web of pre-bonded, the fiber web of described pre-bonded can as the common fiber web of one by rolling and not mill operation process, even if it is not also as the final strength that wiping material uses.
Polymer fiber 6 great majority circular even have constant diameter and be smooth, also not by water mitigation.This makes their more unreasonable knots and presses downward in the filament web of pre-bonded, and they rest on top often.In order to obtain enough entanglement bounding points, firmly to be arrested in filament web by polymer fiber, need the staple fibre extremely grown.Therefore most of staple fibre is 12-18mm, is low to moderate 9mm at the most, and this is described together with filament web above, and they are all through pre-bonded.
Inventive method in general the application, can utilize the fibroreticulate much bigger flexibility of non-binder filaments, to make the entanglement of polymer short fiber easy, and therefore uses these shorter fibers.They can be within the scope of 2-8mm, preferably within the scope of 3-7mm, it is even furthermore preferable that within the scope of 4-6mm.
The entanglement stage 7 can comprise some transverse bars with nozzle in a row, and very thin water jet sprays, to make fibre matting from said nozzle row facing to fiber web at very high pressures.Water jet pressure can be adapted to certain pressure state in different spray nozzles row with different pressures.
Alternatively, fiber web can be transferred in the second entangled fabric before water stings into net.In this case, fiber web also can before transfer, stings into net station and carry out water by having one or more first water with the bar of nozzle in a row and sting into net.
dry etc.
Then will sting wet fiber net 8 into the net through water dry, above-mentioned drying can be carried out on conventional fibre net drying equipment, preferably carries out on those type drying equipments for paper towel dried, as the equipment of percolation airing or Yang Qi seasoning.Material was normally wound in female roller after drying before transformation.
Then in a known manner material transition become suitable form and pack.The structure of material can by process as micro-system wrinkle, hot calendering, embossing etc. further.Also can by different additives as wet strength agent, adhesive chemistry medicine, latex, debonding agent etc. join in material.
nonwoven material
Can with total basis weights for 20-120g/m according to compound non-woven of the present invention
2produce, be preferably 50-80g/m
2.
Long fiber without bonding will improve the mixing of staple fibre, even so that staple fibre also has enough entanglement formula bounding points, remain on firmly in fiber web to make staple fibre.Thus shorter staple fibre will produce a kind of material of improvement, because their every gram of fibers all have more fiber end and easy to be mobile towards Z-direction (perpendicular to fiber web plane).More fiber end stretches out from web surface, because this increasing textile feel.
Bond securely and will produce good ABRASION RESISTANCE.
As can be seen from above-described embodiment, staple fibre can be the fibre blend based on different polymer, and the above-mentioned fiber based on different polymer has different length and dtex, and has different colors.
Also can consider to add synthetic staple that certain proportion is longer than 7mm and is even longer than 12mm in composite nonwoven.This certain proportion based on wt part can up to be shorter than 7mm synthetic staple total amount 10%.But do not see special advantage by this increase.It mainly increases the intensity of nonwoven, but described intensity regulates more easily by the amount of long filament.
Certainly, the invention is not restricted to shown in accompanying drawing and embodiment in above-mentioned explanation and some examples, but can change further in the scope of claims.
example
The parameter just paid close attention to is produced and is tested many according to hydroentangled material of the present invention.
concrete test used:
Taber experiment-by a kind of fasten materials to be tested on one block of plate, and abrasive wheel is formed on above-mentioned plate and moves in a circle, according to ASTM D3884-92, there is some amendment, described amendment causes by measuring the carpet that originally a thin impermanent material instead of the method be designed for, amendment comprises and uses Calibrase CS-10 type abrasive wheel, but does not increase extra weight, and makes and only have 200 turns.Compare marking in produced abrasion loss and one, 1 means " wearing and tearing fragmentate " herein, and 5 mean " not having macroscopic impact ".Device used is " the 5151 type grinding machine " that U.S.'s button is about the Taber Industries production of N.Tonawanda.
L* brightness and b* color experiment-material to be tested irradiate with " outdoor daylight ", and with from Indiana, United States, the Technidyne of New Albany, Technidyne, Color Touch type instrument colorimeter is measured.
According to CIEL*a*b*Color Space L* (brightness) and b* (blueness) value of Cielab1976 systematic survey test material, above-mentioned Cielab1976 system to be equivalent in ISO10526 CIE1964 illustrated in illustrated CIE standard illuminant D65 and ISO/CIE10526 and to supplement Standard Colorimetric Observer, determines by measuring under those conditions of being similar to ISO5631 defined.
This kind ofly for color, the system with specification is described, described color is felt as basis with the people being corrected to what is called " standard observer " from the colourimetric number recorded.
The CIE tristimulus value(s) recorded is transformed into CIE L* and b* value by formula below, and in formula, Y and Z (value from colorimeter records) represents with percentage:
L*＝116·(Y/100)
1/3-16
b*＝200·[(Y/100)
1/3-(Z/118232)
1/3]
The method also at a brochure, " optical property of paper is measured and is controlled ", 1996, the second edition, Technidyne Company, in have been introduced.
These tests are being carried out according in nonwoven sample of the present invention He on authentic specimen, the both sides of sample are decided to be fabric side and free side herein, the above-mentioned fabrics side meaning refers to that long filament has been put at pawnshop, when staple fibre and slurry fiber, supatex fabric is against the side forming fabric, and the above-mentioned free side meaning refers to by the supatex fabric side of the different fiber of its lay.
example 1
The speed lay that spunlaid filaments wide for 0.4m is divided with 20m/ on forming fabric, to make each long filament mutually non-adhesive.By the unbonded fiber net compacting a little of spunlaid filaments, and transfer on the second forming fabric, for adding wet-laying composition.By the high-order head box that a 0.4m is wide, on the fiber web that the fiber dispersion lay containing slurry fiber and short chopped fibres is not bonded to spunlaid filaments, and discharge and siphon away excessive water.
Then the spunlaid filaments do not bonded and wet laid cellulose are mixed, and pass through at 7,0KN/m
2pressure under sting into net with three arm water and be bonded together.It is carry out from free side that water stings into net, and therefore slurry fiber and staple fibre move in spunlaid filaments fiber web, and fully mix with described spunlaid filaments fiber web.The energy supplied when water stings into net is 300kWh/ ton.
Finally water is stung into net materials dehydration, then use drum-type cross-flow drying device dry.
Total basis weights of spunlaid filaments-staple fibre-slurry fiber compound is about 80g/m
2.
Composite consist of 25% filature fleece formation polypropylene filament, 10% shortly cuts polypropene staple and 65% chemical slurry fiber.The line density scanning electron microscopy measurement of spunlaid filaments, and find it is 2.3 dtexs.Composite is made together with the short PP of prescinding (polypropylene) fiber of 1.7 dtexs, and the above-mentioned short PP of prescinding fiber has different length and is respectively 6, and 12 and 18mm.
See Fig. 2, shown by the surface abrasion resistance intensity measured by the Taber abrasion test on free side, the material made with 6mm fiber is especially on the free side leaving forming fabric, better than the material made with 12 and the short chopped fibres of 18mm accordingly.
example 2
With the short configuration of cutting in polypropene staple repetition example 1 of blueness, to become mixing/formation of net long filament and slurry fiber overall according to staple length research staple fibre with continuous spinning.Total basis weights of composite is about 80g/m
2, and consist of 25% spunlaid filaments, 10% short chopped fibres and 65% chemical slurry fiber.The line density of spunlaid filaments is 2,3 dtexs.Blueness is short cuts 1, and the length of 7 dtex PP staple fibres is respectively 6 and 18mm.
When each material of visualization, obviously, originally containing the free side more blue than fabric side (darker) of 10% blue staple fibre.The brightness of each material and a kind of Technidyne Color Touch type instrumental characterizing of color.As shown in L* brightness value in Fig. 3, always brighter than free side-more painted fiber retention of fabric side is on their this side of lay.As shown in the Composite Results that obtains with 6mm fiber is compared with the result obtained with 18mm fiber, the difference between both sides for the fiber that 6mm is long less-show that shorter fiber more easily flow to opposite side.When by instrument evaluation B* color value, obtain similar result, as shown in Figure 4, this shows, when replacing 18mm long fiber with 6mm long fiber, the aberration between both sides is less, and this also shows that shorter fiber more easily flow to opposite side.
Therefore the staple fibre that these result supports are shorter becomes to be integrated with the spunlaid filaments grid do not bonded continuously better.
example 3
Tie up the configuration of repetition example 1 with the short rayon short fibre of cutting, become the mixing/formation of net long filament and slurry fiber overall with continuous spinning to study the short rayon short fibre of cutting dimension compared with polypropene staple.Total basis weights of composite is about 47g/m
2, and consist of 25% spunlaid filaments, 10% shortly cuts the chemical slurry fiber of rayon short fibre's peacekeeping 65%.
The length that the short rayon short fibre's of cutting dimension is 1,7 dtexs and has for 6mm.
Fiber web can be tangled by the entanglement of 400kWh/ ton.
example 4
The configuration that polypropene staple repeats example 1 is cut, to become the mixing/formation of net long filament and slurry fiber overall according to staple length research staple fibre with continuous spinning with black is short.Total basis weights of composite is about 68g/m
2, and composition is 25% spunlaid filaments, 10% short chopped fibres and 65% slurry fiber.
The length that the short PP of the cutting staple fibre of black is 1,7 dtexs and has for 6mm.
Fiber web can be tangled by the entanglement of 400kWh/ ton.
example 5
The configuration that polypropene staple repeats example 1 is cut, so that it is overall with the mixing/formation of continuous print spunlaid filaments and slurry fiber to study staple fibre with the blueness short rayon short fibre of cutting peacekeeping white is short.Total basis weights of composite is about 80g/m
2, and composition is 25% spunlaid filaments, and 5% shortly cuts blue rayon short fibre dimension, and 5% shortly cuts white polypropylene staple fibre and 65% slurry fiber.
The blue short rayon short fibre's of cutting dimension is 1,7 dtexs, and has the length for 6mm.The short PP of the cutting staple fibre of white is 1.2 dtexs, and has the length for 6mm.
Fiber web can be tangled by the entanglement of 300kWh/ ton, transfers to a kind of formation on the fabric of pattern, and can form pattern by the entanglement of 135kWh/ ton.
The mechanical performance of example 3-5 illustrates in Table 1.These performances are gratifying, and show, when not losing other performance, can reach and reduce dual character and good ABRASION RESISTANCE.
Table 1
| Example number | 3 | 4 | 5 |
| Tangle energy (kWh) | 400 | 400 | 300+135 |
| Basis weights (g/m 2) | 47.1 | 68.2 | 79.8 |
| Thickness 2kPa (μm) | 339 | 421 | 478 |
| Bulk density 2kPa (cm 3/g) | 7.2 | 6.2 | 6.0 |
| Stretching stiffness MD (N/m) | 10901 | 27429 | 31090 |
| Stretching stiffness CD (N/m) | 1214 | 2237 | 2727 |
| Tensile strength does MD (N/m) | 934 | 1694 | 1989 |
| Tensile strength does CD (N/m) | 533 | 933 | 1059 |
| Percentage elongation MD (%) | 115 | 49 | 45 |
| Percentage elongation CD (%) | 156 | 131 | 119 |
| Work to break MD (J/m 2) | 1022 | 905 | 1028 |
| Work to break CD (J/m 2) | 589 | 817 | 876 |
| Work to break index (J/g) | 16.5 | 12.6 | 11.9 |
| Tensile strength MD, wet (N/m) | ? | 1647 | ? |
| Tensile strength CD, wet (N/m) | ? | 832 | ? |
Claims (19)
1. a hydroentangled good combination all-in-one-piece composite nonwoven material (8), comprise the mixture be made up of the natural fabric (5) of randomized continuous filament yarn (3), wet-laying and the synthetic staple (6) of wet-laying, wherein said synthetic staple is prepared to produce single Cutting Length by the cutting carrying out fibre bundle; It is characterized in that, synthetic staple has the length for 3-7mm, wherein, thermal bond points is not had between continuous filament yarn (3), described continuous filament yarn, described natural fabric and described synthetic staple are that hydroentangled described natural fabric and the synthetic staple of making can fully mix, and be fully distributed in whole nonwoven material, and make described continuous filament yarn around self and described natural fabric and synthetic staple distortion and with himself and described natural fabric and synthetic staple entangled.
2. according to hydroentangled nonwoven material according to claim 1, it is characterized in that, the length of described synthetic staple is 4-6mm.
3. according to the hydroentangled nonwoven material described in claim l or 2, it is characterized in that, mixture is made up of the synthetic staple (6) of the continuous filament yarn (3) of 10-50%, the natural fabric (5) of 20-85% and 5-50%, and above-mentioned all percentage is all the Weight computation based on total nonwoven material.
4. according to hydroentangled nonwoven material according to claim 3, it is characterized in that, described continuous filament yarn (3) accounts for the 15-35% of the weight of total nonwoven material.
5. according to hydroentangled nonwoven material according to claim 3, it is characterized in that, described natural fabric (5) accounts for the 40-75% of the weight of total nonwoven material.
6. according to hydroentangled nonwoven material according to claim 3, it is characterized in that, described synthetic staple (6) accounts for the 5-25% of the weight of total nonwoven material.
7. according to the hydroentangled nonwoven material described in claim l or 2, it is characterized in that, continuous filament yarn is spunlaid filaments.
8. according to hydroentangled nonwoven material according to claim 7, it is characterized in that, continuous filament yarn is selected from the group comprising polypropylene, polyesters and polyactide class.
9. hydroentangled nonwoven material as claimed in claim 1 or 2, is characterized in that, it is 40g/m that the continuous filament fibers netting gear of composite has one to multiple
2basis weights.
10. hydroentangled nonwoven material as claimed in claim 1 or 2, is characterized in that, it is 30g/m that the continuous filament fibers netting gear of composite has one to multiple
2basis weights.
11. according to the hydroentangled nonwoven material described in claim l or 2, it is characterized in that, synthetic staple (6) is selected from the group comprising polyethylene, polypropylene, polyamide, polyesters, polyactide, artificial silk and molten imitative cellulose fibre.
12., according to the hydroentangled nonwoven material described in claim 1 or 2, is characterized in that, a part of synthetic staple (6) is painted, accounts at least 3% of supatex fabric gross weight.
13., according to the hydroentangled nonwoven material described in claim 1 or 2, is characterized in that, a part of synthetic staple (6) is painted, accounts at least 5% of supatex fabric gross weight.
14., according to the hydroentangled nonwoven material described in claim 1 or 2, is characterized in that, natural fabric (5) comprises slurry fiber.
15., according to hydroentangled nonwoven material according to claim 14, is characterized in that, described slurry fiber is wood pulp fibre.
16., according to the hydroentangled nonwoven material described in claim 1 or 2, is characterized in that, a part of synthetic staple (5) is painted, accounts at least 3% of supatex fabric gross weight.
17., according to the hydroentangled nonwoven material described in claim 1 or 2, is characterized in that, a part of synthetic staple (5) is painted, accounts at least 5% of supatex fabric gross weight.
The method of 18. 1 kinds of productions nonwoven material (8), comprising: the fiber web forming continuous filament yarn (3) on forming fabric (1); And the wet-formed fiber dispersion (4) containing synthetic staple (5) and natural fabric (6) is applied on the top of above-mentioned continuous filament yarn, wherein said synthetic staple is prepared to produce single Cutting Length by the cutting carrying out fibre bundle; Such formation contains the fiber web of above-mentioned continuous filament yarn, synthetic staple and natural fabric; And subsequently described fiber web water thorn is formed nonwoven material (8),
It is characterized in that, synthetic staple has the length for 3-7mm, wherein, not thermal bonding technology step application on continuous filament yarn, and water is carried out to described natural fabric and described synthetic staple sting into net process and described natural fabric and synthetic staple can fully be mixed, and be fully distributed in whole nonwoven material, and make described continuous filament yarn around self and described natural fabric and synthetic staple distortion and with himself and described natural fabric and synthetic staple entangled.
19. methods of producing nonwoven material as claimed in claim 18, it is characterized in that, described synthetic staple has the length of 4-6mm
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE0302874-3 | 2003-10-31 | ||
| SE0302874A SE0302874D0 (en) | 2003-10-31 | 2003-10-31 | A hydroentangled nonwoven material |
| CNA2004800307048A CN1871392A (en) | 2003-10-31 | 2004-10-21 | A hydroentangled nonwoven material |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004800307048A Division CN1871392A (en) | 2003-10-31 | 2004-10-21 | A hydroentangled nonwoven material |
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| CN104278433A true CN104278433A (en) | 2015-01-14 |
| CN104278433B CN104278433B (en) | 2019-08-20 |
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| CN201410260490.9A Active CN104278433B (en) | 2003-10-31 | 2004-10-21 | Hydroentangled nonwoven material |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2004800307048A Pending CN1871392A (en) | 2003-10-31 | 2004-10-21 | A hydroentangled nonwoven material |
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| Country | Link |
|---|---|
| EP (1) | EP1689923B1 (en) |
| CN (2) | CN1871392A (en) |
| AU (1) | AU2004286185B2 (en) |
| BR (1) | BRPI0416078A (en) |
| ES (1) | ES2536544T3 (en) |
| HU (1) | HUE025424T2 (en) |
| MX (1) | MXPA06003848A (en) |
| PL (1) | PL1689923T3 (en) |
| RU (1) | RU2364668C2 (en) |
| SE (1) | SE0302874D0 (en) |
| WO (1) | WO2005042819A2 (en) |
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| CN106048888A (en) * | 2016-07-06 | 2016-10-26 | 常州维盛无纺科技有限公司 | Multi-layer non-glued composite non-woven fabric containing natural fiber, preparation method and applications thereof |
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| CN105624917A (en) * | 2014-11-26 | 2016-06-01 | 聚隆纤维股份有限公司 | Method for preparing non-woven fabric with moisture adsorption transferability by spinning staple fibers |
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| CN106048888A (en) * | 2016-07-06 | 2016-10-26 | 常州维盛无纺科技有限公司 | Multi-layer non-glued composite non-woven fabric containing natural fiber, preparation method and applications thereof |
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| CN110582602A (en) * | 2017-04-03 | 2019-12-17 | 兰精股份公司 | Cellulosic fiber nonwoven fabric having fiber diameter distribution |
| CN114929959A (en) * | 2020-01-10 | 2022-08-19 | 安德里茨库斯特斯有限责任公司 | Composite nonwoven fabric web manufacturing method and composite nonwoven fabric web manufacturing apparatus |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP1689923A2 (en) | 2006-08-16 |
| CN1871392A (en) | 2006-11-29 |
| HUE025424T2 (en) | 2016-04-28 |
| RU2364668C2 (en) | 2009-08-20 |
| SE0302874D0 (en) | 2003-10-31 |
| AU2004286185A1 (en) | 2005-05-12 |
| PL1689923T3 (en) | 2015-07-31 |
| WO2005042819A3 (en) | 2005-10-06 |
| CN104278433B (en) | 2019-08-20 |
| ES2536544T3 (en) | 2015-05-26 |
| BRPI0416078A (en) | 2007-01-02 |
| RU2006118807A (en) | 2007-12-20 |
| AU2004286185B2 (en) | 2009-10-29 |
| WO2005042819A2 (en) | 2005-05-12 |
| EP1689923B1 (en) | 2015-02-25 |
| MXPA06003848A (en) | 2006-07-03 |
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