CN104278433B - Hydroentangled nonwoven material - Google Patents
Hydroentangled nonwoven material Download PDFInfo
- Publication number
- CN104278433B CN104278433B CN201410260490.9A CN201410260490A CN104278433B CN 104278433 B CN104278433 B CN 104278433B CN 201410260490 A CN201410260490 A CN 201410260490A CN 104278433 B CN104278433 B CN 104278433B
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- China
- Prior art keywords
- fiber
- synthetic staple
- continuous filaments
- nonwoven material
- natural fiber
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- Expired - Lifetime
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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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to a kind of composite nonwoven materials that improved hydroentangled good combination is integral, the composite nonwoven material includes one kind by continuous filaments, the mixture of synthetic staple and natural fiber composition, dual character and improved textile feel with a reduction.It is the length of 3-7mm that synthetic staple, which has one, is not thermally bonded between each long filament preferably.The invention further relates to a kind of methods for producing this non-woven material.Supatex fabric includes one kind by 10-50w-% continuous filaments, 5-50w-% synthetic staple, with the mixture of 20-85w-% natural fiber composition, above-mentioned continuous filaments is preferably from polypropylene, it is selected in polyesters and polyactide, above-mentioned synthetic staple is selected from polyethylene, polypropylene, polyesters, polyamide-based, artificial silk and Lyocell fibre, and above-mentioned natural fiber is preferably slurry fiber.Continuous filaments is preferably spunlaid filaments.A part of staple fiber and/or slurry fiber can colour.
Description
The application is entitled " hydroentangled nonwoven material " submitted for 2004/10/21st
200480030704.8 the divisional application of number application.
Technical field
The present invention relates to a kind of composite nonwoven material that hydroentangled good combination is integrated, the complex nonwovens
Material includes by continuous filaments, the mixture of synthetic staple and natural fiber composition.
Background of invention
Absorbent nonwoven materials are usually used to wipe various each in industry, service industry, office and family place
It the overflow of sample and sews.Main synthetic plastic component is usually hydrophobic, and absorbs oil, fat and lubricating grease, and
Water is also absorbed by capillary force in a way.In order to reach higher water suction grade, cellulose slurry is usually added.To obtained
For wiping, there are many require on the non-woven material of purpose.Preferably wipe device should be it is firm, have absorbability, be wear-resisting
The low fluffing with showing.In order to wipe device instead of the textile fabric for being still market major part, they should also be soft and have
The sense of touch of textile fabric.
Non-woven material including cellulose slurry and synthetic fibers mixture can use conventional paper technology production, see ratio
Such as United States Patent (USP) US 4822452, web, the web packet are formed by with wet-laid processes the patent describe a kind of
The natural fiber or synthetic fibers and lignocellulosic paper-making fibre for including staple length, wherein relevant thickening is added in ingredient
Agent.
Spun lacing networking method or jet stream networking method are a kind of technologies introduced in the 1970s, see such as Canadian Patent
No.841938.This method includes forming a kind of web, and the web is dry-laying either wet-laying, herein it
Make fibre matting under high pressure with very thin water jet afterwards.By several draining jet stream aligned fibers nets, the web is by a fortune
Dynamic textile support.Then the web of entanglement is dry.The fiber used in the material can be synthesis or regenerated short
Fiber, such as polyester, polyamide, polypropylene, staple fibre (rayon) or the like, slurry fiber or slurry fiber and
The mixture of staple fiber.Jet stream can be under reasonable cost with high quality of production at net materials, and has very high absorption energy
Power.They can be such as family or industrial wiping material, as one in medical treatment and nursing and for sanitary purposes etc.
Secondary property material.
A kind of spun lacing of the web of foam forming is disclosed in WO 96/02701.Foaming process is wet-laying
A kind of particular variation also enabled it to containing a kind of surfactant herein in water other than containing fiber and chemicals
Foam is formed, fiber can be entangled in the bubble of foam or between bubble.Fiber included in web can be pulpous state
Fiber and other natural fibers and synthetic fibers.
It is disclosed by such as European patent EP-B-0333211 and EP-B-0333228 by a kind of fibre blend spun lacing
Networking, one of fibre composition are made of meltblown fibers, and the meltblown fibers are a seed types of spunlaid filaments.Substrate
Material, that is, the fibrous material being applied in spun lacing networking method, or by the preformed fibrous layer of at least two combined types
Composition, or be made of a kind of " coform material (coform materid) ", in above-mentioned at least two combined types preform
Fibrous layer at least one layer be made of meltblown fibers, and above-mentioned " coform material " mainly by meltblown fibers and other fibers
Homogeneous mixture by air lay on a forming fabric.
Being disclosed by European patent EP-A-0308320 starches the pre-bonded net of continuous filaments with containing for pre-bonded is separated
Shape fiber and the wet laid cellulose material of staple fiber are put together, and by the web being formed separately together spun lacing networking at
A kind of laminate.In this material, the fiber of different webs does not be combined with each other because fiber before spun lacing networking
It is mutually bonded, and only limited activity.Material will show apparent dual character.Staple fiber used is preferred with one
Length is 12-19mm, but be can be within the scope of 9.5mm-51mm.
They often have significant dual character to a problem-being clearly seen in hydroentangled material, also can
Clearly debating Chu be in the difference between the side in winding step towards fabric and the side towards water jet.In certain situations
Under, this already functions as a kind of advantageous decorative pattern, but in most cases it is counted as a disadvantage.When two sseparated
When during layer group merging feeding entanglement process, this usual processing step cannot be such that each layer is sufficiently mixed, but these layers are still
So exist, although being mutually glued.There is slurry fiber in compound, then will have side and pulpous state fibre rich in slurry fiber
Poor side is tieed up, will lead to the different performance of two sides in this way.When using spunlaid filaments, such case is just encountered, because
For their two-dimensional layers that one kind easy to form is flat when created, will make to mix so very poor.Certain manufacturers attempt first from
Side adds a coating and tangles, and then again overturns web and adds another coating from the other side and tangle, but is big
Most fiber movements occur very early during entanglement process, and this more complicated mode is not fully solved this and asks
Topic.
When using filament web in hydroentangled material, another problem is that have seldom free-fiber end,
Because long filament is essentially no end, and only staple fiber and slurry fiber can help to this.Especially polymer fiber end
Portion is only makes material have textile feel by their softening effect.The slurry fiber often used in the composite has
Many free ends, but because they are bonded in hydrogen bond, they do not generate contribution to soft textile feel；On the contrary, it
Final material will be made to feel more stiff.Therefore, in order to obtain the textile material of softness a kind of, it is important that have high percentage
Textile material, that is, synthesize staple fiber.
Summary of the invention
The object of the present invention is to provide the composite nonwoven material that a kind of hydroentangled good combination of improvement is integrated,
The composite nonwoven material includes the mixture being made of continuous filaments, synthetic staple and natural fiber, the non-woven material
Material has a dual character reduced, that is, two sides have similar appearance and performance.
It is a still further object of the present invention to provide what a kind of hydroentangled good combination of improvement was integrated compound non-to knit
Producing material material, the composite nonwoven material include the mixture being made of continuous filaments, synthetic staple and natural fiber, institute
State the textile feel that mixture has a kind of improvement.
This is obtained according to the present invention by providing this hydroentangled nonwoven material, and synthetic staple has herein
One length is 3-7mm.Select the fiber more shorter than previously used fiber that slurry fiber and staple fiber is enable to be better mixed, and
It is fully distributed in entire non-woven material.
Preferred material according to the invention is not thermally bonded between long filament, this will ensure that long filament they by spun lacing at
Movement has bigger initial flexibility before net method bonds completely, so that staple fiber and slurry fiber be enable more to be sufficiently mixed to grow
In silk fiber net.
Preferred material according to the invention includes continuous filaments containing 10-15%, 5-50% synthetic staple and 20-85%
The mixture of natural fiber, above-mentioned percentage are got by the calculating of non-woven material total weight.A kind of preferred material
Material has 15-35% continuous filaments.More preferably also containing the synthetic staple of 5-25%.It is even more preferred that containing 40-
75% natural fiber.
Preferred material according to the invention is that continuous filaments therein is spunlaid filaments.
Preferred material according to the invention is, continuous filaments therein be from polypropylene, polyesters and polyactide class this
It is selected in group.
Preferred material according to the invention is the basis weights of continuous filament fibers mesh portions in compound therein
At most 40g/m2, and more preferably at most 30g/m2。
Preferred material according to the invention is that synthetic staple therein is from polyethylene, polypropylene, polyesters, polyamides
Amine, polyactide class are selected in this group of staple fibre (rayon) and Lyocell fibre.
Preferred material according to the invention is that at least part synthetic staple therein is coloring, accounts for nonwoven
At least the 3% of object total weight, preferably accounts at least 5%.
Preferred material according to the invention is that natural fiber therein is made of slurry fiber, more preferably by wood pulp
Fiber composition.
Preferred material according to the invention is that at least part natural fiber therein is coloring, accounts for supatex fabric
At least the 3% of total weight, preferably accounts at least 5%.
Especially when using the staple fiber or natural fiber of coloring, it can be easy to go out the reduction of dual character respectively.
The textile feel that the staple fiber end stretched out from non-woven material two sides will make surface have improvement.
It is a further object to provide a kind of integral compound of hydroentangled good combination for producing improvement
The method of non-woven material, the composite nonwoven material include being made of continuous filaments, synthetic staple and natural fiber
Mixture, the mixture has the dual character reduced, that is, two sides should have similar appearance and performance, and also have
The textile feel of improvement.
This is reached according to the present invention by providing a kind of method, the described method comprises the following steps: in a forming fabric
Upper formation continuous filament fibers net；And the wetlaid fibers webs dispersion containing synthetic staple and natural fiber is applied
(apply) on the top of above-mentioned continuous filaments, the fibre containing above-mentioned continuous filaments, synthetic staple and natural fiber is formed in this way
Tie up net；And then by web spun lacing networking, to form non-woven material, it is 3- that synthetic staple, which has length, herein
7mm, preferably 4-6mm.
The preferred alternative plan of the method for the present invention is to be based on not applying continuous filaments any thermal bonding technology step
Suddenly.
Other preferred alternative plans of the method for the present invention are based on using the weight as described in claim 1-10
The fiber type of percentage.
Detailed description of the invention
Some embodiments shown in below with reference to accompanying drawings more fully illustrate the present invention.
Fig. 1 is schematically shown for producing according to a kind of device of hydroentangled nonwoven material of the present invention
Exemplary embodiment.
Fig. 2 shows the wear-resisting of three kinds of compound two sides with different staple lengths with fibre length array diagram form
Property.
Fig. 3 shows the L* brightness of two kinds of compound two sides with different staple lengths with fibre length array diagram form
Value.
Fig. 4 shows the B* color of two kinds of compound two sides with different staple lengths with fibre length array diagram form
Value.
Specific embodiment
The composite nonwoven material that the hydroentangled good combination of improvement is integral includes by continuous filaments, synthesizes short fibre
The mixture of dimension and natural fiber composition.Detailed description are as follows for these different types of fibers.
Long filament
Long filament is that some length compared with their diameters are very long, the fiber of theoretically infinite length.They can be under
State method production: thermoplastic polymer is melted and is extruded through thin nozzle, hereafter preferably by polymer flow simultaneously
It is cooling to make polymer along the airflow function that the polymer flow blows, and is solidified into single thread, the single thread can pass through wire drawing
(drawing), (stretching) or buckling (crimping) processing are stretched.The chemicals for being used for additional function can be added
Onto surface.
Long filament can also enter the chemical reaction of reaction medium by forming the reactant solution of fiber, such as by will be yellow
Viscose fiber spinning made of ortho acid cellulose esters enters sulfuric acid and is produced.
Meltblown filament is produced with following methods: by the way that the thermoplastic polymer of melting is extruded through thin nozzle at very
Thin polymer flow, and blow the air-flow assembled towards polymer flow, so that they are hot candied at the continuous of very small diameter
Long filament.Meltblown production such as has been described in United States Patent (USP) 3849241 or 4048364.Fiber can according to their size
To be microfibre (microfibre) or crude fibre (macrofibre).Microfibre has the diameter up to 20 μm, usually
It is 2-12 μm.Crude fibre has a diameter more than 20 μm, and usually 20-100 μm.
Spun-bonded continuous yarn is produced with similar approach, but air-flow is coolant, and the stretching of long filament is carried out by air, with
Just suitable diameter is obtained.Fibre diameter is usually in 10 μm or more, usually 10-100 μm.The production of spun-bonded continuous yarn is such as to exist
Illustrated in United States Patent (USP) 4813864 or 5545371.
Spun-bonded continuous yarn and meltblown filament are to be referred to as spunlaid filaments (spunlaid as one group
Filaments), be meant that they are directly laid on a mobile surface at the scene to form web, the net into
It is bonded in the production process of one step.It is control extrusion molding by selective polymer and state of temperature control " melt flow index "
Pith, thus be the pith for controlling long filament and being formed.Spun-bonded continuous yarn is usually that intensity is stronger and more evenly.
Tow is another source of long filament, and above-mentioned tow is usually the predecessor in staple fiber production, but its own is also made
It sells and uses for product.It with method identical with spunlaid fibres, by thin polymer flow wire drawing and stretches, but is not laying
Web is formed on mobile surface, but they are kept into it is a branch of, to finally complete hot candied and to stretch.Work as production
When staple fiber, then this beam filament is handled with spinning surface processing chemicals, usually buckling, and is then fed into a cutting
In the stage, in the cutting stage, the wheel of belt cutter will be cut into long filament different fibre lengths, the different length
Fiber packing is at parcel post, to ship and be used as staple fiber.When producing tow, it is being with or without spinning surface processing chemical drugs
Endless tow is packaged into parcel post in the case where product or is packaged into case.
It is any with enough consistent performances to allow own hot candied thermoplasticity in this way in the molten state
Polymer may serve to production meltblown fibers or spun-bonded fibre in principle.Some examples of useful polymer are polyolefin
Class, such as polyethylene and polypropylene, polyamide-based, polyesters and polyactide class.These above-mentioned polymer can certainly be used
Copolymer, and the natural polymer with thermoplastic properties.
Natural fiber
There are many natural fibers of type can be used, especially with water absorbing capacity thin layer consistent with helping to create
Those of trend fiber.In the natural fiber that can be used, mainly there is cellulose fibre class such as seed hair fiber, such as cotton
Flower, kapok and milkweed fibre；Leaf fibre class, such as sisal hemp, abaca, pina fibre and New Zealand flax；Or bast is fine
Tie up class, such as flax, castor-oil plant, jute, mestha and paper pulp.
Wood pulp cellulose is especially very suitable for using and both cork fibrous and hardwood fiber are all suitable, can also use
Regenerated fiber.
Slurry fiber length will be from the above-mentioned length of the about 1.2mm of the about 3mm of cork fibrous and hardwood fiber and regenerated fiber
The mixing of degree and it is even shorter between change.
Staple fiber
Staple fiber used can be produced with substance identical with above-mentioned long filament and by identical technical process.It is other can
Staple fiber is made of regenerated cellulose such as viscose fiber and Lyocell fibre.
They can be handled with spin finish and buckling, but the technique for being preferably used to produce material of the present invention
For procedural type, this is unnecessary.
Usually increase spin finish and buckling processing, to be easy to handle fiber in dry method, for example comb, and/or assigns
The certain performances of materials described below, such as hydrophily are given, above-mentioned material is only made of these fibers, for example is used for the non-woven top of diaper
Portion's thin slice.
The cutting of fibre bundle is usually carried out, to generate single Cutting Length, above-mentioned Cutting Length can be cut by changing
The distance between each blade is cut in wheel to change.It is used not for heat bonding non-woven fabric according to the use planned
Same fibre length is between 25-50mm.Wet-laying spun lacing formula non-woven fabric usually using 12-18mm, or down to
9mm。
For the spun lacing formula material made of traditional wet laid technique, intensity and its performance such as table of material
Face wearability increases as fibre length increases (for same fineness and fibre-forming polymer).When continuous filaments and staple fiber
When being used together with slurry fiber, the intensity of material is greatly mostly from long filament.
Technical process
It is a kind of to be shown in FIG. 1 for producing according to the general embodiments of the method for material of the present invention, and including with
Lower step:
The formation fabric 1 of one annular is provided, fabric can be formed through with the continuous long filament 2 of laying thereon and draw excessive sky
Gas, to form the predecessor of web；
So that the formation fabric with continuous filaments is proceeded to the wet-laying stage, will include natural fiber 5 at this and short
The slurry wet-laying of fiber 6 is on predecessor's web of continuous filaments, and partially into above-mentioned predecessor's web, and
It is formed through fabric and excludes excessive water；
The formation fabric with long filament and fibre blend is set to proceed to the spun lacing networking stage 7, in director silk and fiber
It is closely mixed, and is adhered in non-woven webs, above-mentioned height by the effect of many very thin high pressure water jets
Pressure aqueous jet impacts on fiber, so that they are mutually mixed and tangle, and is formed through fabric discharge entanglement water；
Make to form fabric and proceeds to drying stage (not shown), dry non-woven webs at this；
And non-woven webs is further made to proceed to the stages such as rolling, cutting, packaging.
Long filament ' web '
According to embodiment shown in FIG. 1, the continuous filaments 2 made of extruding molten thermoplastic piece is directly laid in
It is formed on fabric 1, continuous long filament 2 can form unbonded fiber net structure at this, and long filament can be with that in the structure
This is moved freely relatively.This is realized preferably by keeping the distance between nozzle and formation fabric 1 bigger, so as to long filament
It can cool down in laying to before being formed on fabric 1, at the lower temperature, their adherence is greatly reduced.For
Selectively, long filament is realized to the cooling before being formed on fabric with some other mode in their layings, for example utilizes multiple skies
Gas source realizes, wherein air 10 is used to above-mentioned long filament is cooling when long filament is hot candied or when being stretched to preferred degree.
It is formed through fabric suction for the air of cooling, wire drawing and elongate filaments, to allow long filament to flow into air
It rests in the mesh of formation fabric there.It may need good vacuum that air is sucked out.
When they are laid on to be formed on fabric, the speed of long filament is more much higher than the speed for forming fabric, therefore long filament will
Irregular ring, and the bending when they are collected into be formed on fabric are formed, it is fine to form a kind of predecessor being randomized very much
Tie up net.
The basis weights of the long filament predecessor web of formation should be in 2 and 50g/m2Between.
Wet-laying
Slurry fiber and the conventional method slurrying of staple fiber 6, or mix, or separate slurrying first and then
Mixing, and for example wet and/or dry strength agents of conventional additive for paper making, retention agent, dispersing agent are added, to generate slurry in water
Shape fiber and the well-mixed slurry of staple fiber.
This mixture is passed through wet-laying high position head box 4 to be pumped on mobile formation fabric 1, is mixed at this
It is online to unbonded predecessor's filament fiber with its free-moving long filament laying to close object.
Slurry fiber and staple fiber will stay on to be formed on fabric and long filament.A portion fiber enters between long filament,
And most fibers will be docked on the top of filament web.
Using the fibre sucking case to be formed below fabric is arranged in, excessive water is drawn through to be laid in be formed on fabric
Filament web to form fabric suction with being passed down through.
It tangles
The web spun lacing networking for forming continuous filaments and staple fiber and slurry fiber, and above-mentioned web is still simultaneously
By formation textile support, and it is sufficiently mixed and is bonded into composite nonwoven material 8.The guidance note of spun lacing net-forming process process
It is provided in Canadian Patent 841938.
In the spun lacing networking stage 7, by different types of fibre matting, and composite nonwoven material 8 is obtained, wherein owning
Fiber type is substantially uniformly mixed and is integrated with each other.Thin moveable spinning networking long filament around itself and it is other
Torsion of fibers and with itself and other fibre mattings, generate so a kind of with very high-intensitive material.For needed for spun lacing networking
Energy supply it is relatively low, that is, material is easy to tangle.Energy supply in spun lacing networking is suitably in 50-
In 500kwh/ tons of ranges.
Preferably, before 6 laying of slurry fiber and staple fiber, by such as heat bonding or spun lacing networking method will before
The bonding of body filament web.Long filament should be it is entirely free on his, to be moved relative to each other, so as to keep staple fiber and pulpous state fine
Dimension is mixed and is torqued into filament web during entanglement.At this part of technical process, in filament web each long filament it
Between thermal bond points will serve tamper, can make staple fiber and slurry fiber stop at these bounding points nearby snarl because
Bounding point will be such that long filament is kept fixed near heat seal point." sieve effect " of web will enhance, and the result is that generating more
Two-way type material.By not being thermally bonded, apply such as between each heating roller to long filament we mean that there is no
The point of heat and pressure, be pressed together a part of long filament, so that these long filaments soften and/or are fused together to contact
It is deformed at point.Certain bounding points especially meltblowing adhesive point can be caused in lapping by remaining adherence, but these are connecing
It is not deformed at contact, or deformation is very weak, so that being broken under the influence of water jet power into the net from spun lacing.
The intensity of hydroentangled material based on only staple fiber and slurry fiber and the amount of every kind of fibre matting point have
Much relations；Therefore long staple fiber and long slurry fiber are preferred.When using long filament, intensity is mostly based on long filament,
And fairly rapid reach when tangling.Therefore tangle can it is most of by in the mixing of long filament and fiber, to reach
Good combination.This mixed easiness is considerably increased according to the unbonded open design of long filament of the present invention.
Slurry fiber is irregular, flat, distortion formula and curling, and is flexible when wetting takes place.These performances
It allows and their very easy mixing and is entangled to and adheres to long filament and/or compared in the web of long and short fiber.Therefore slurry fiber
Or even it can be used together with the web of pre-bonded, the web of the pre-bonded can be used as one with the long filament of pre-bonded
Kind common web is handled by rolling and not mill operation, even if to be used as wiping material to use not yet final for it
Intensity.
Polymer fiber 6 is most of be it is round even with constant diameter and be it is smooth, also do not influenced by water.This
Make their more unreasonable knots and press downward in the filament web of pre-bonded, they are often stopped on the top.In order to obtain
Enough entanglement bounding points, firmly to arrest polymer fiber in filament web, the staple fiber that needs extremely to grow.Cause
This most of staple fiber is 12-18mm, and at most down to 9mm, this is described together with filament web in front, they are complete
All have been subjected to pre-bonded.
Inventive method in general the application can use the much bigger flexibility of unbonded filament web, to make
The entanglement of polymer short fiber is easy, and therefore uses these shorter fibers.They can be within the scope of 2-8mm, preferably
Be within the scope of 3-7mm, it is even furthermore preferable that within the scope of 4-6mm.
The spun lacing networking stage 7 may include several transverse bars with nozzle in a row, and very thin water jet is in very high pressure
Under from said nozzle arrange against web spray, to make fibre matting.Water jet pressure can be adapted to arrange in different spray nozzles
In with different pressures certain pressure state.
Alternatively, web can be transferred in the second entangled fabric before spun lacing networking.In this case,
Web can also before transfer, by the first spun lacing networking station with one or more bars with nozzle in a row into
Row spun lacing networking.
It is dry etc.
Then will be dry by spun lacing wet fiber net into the net, above-mentioned drying can be enterprising in conventional fibre net drying equipment
Row, preferably carries out on those of paper towel dried type drying equipment, and such as flow airing or Yang Qi drying
The equipment of method.Material is usually to be wound into female roller before transformation after drying.
Then material is transformed into suitable form in a known manner and packed.The structure of material can be by further
Such as micro- system wrinkle of processing, hot calendering, embossing.It can also be by different additives such as wet strength agent, adhesive chemicals, glue
Cream, debonding agent etc. are added in material.
Non-woven material
It can be 20-120g/m with total basis weights according to compound non-woven of the present invention2It produces,
It is preferably 50-80g/m2。
Long fibre without bonding will improve the mixing of staple fiber, even so that staple fiber also has enough entanglement formulas
Bounding point, so that staple fiber is securely held in web.Thus shorter staple fiber will generate a kind of material of improvement, because
All there are more fiber ends for their every gram of fibers and be easy mobile towards Z-direction (perpendicular to fiber network plane).More
Fiber end is stretched out from web surface, therefore increases textile feel.
Bonding will generate good wearability securely.
It is above-mentioned such as from above-described embodiment it can be noted that staple fiber can be the fibre blend based on different polymer
Fiber based on different polymer has different length and dtex, and with different colors.
It is also contemplated that plus certain proportion be longer than 7mm and or even be longer than the synthetic staple of 12mm to composite nonwoven
In.This certain proportion can up to be shorter than the 10% of the synthetic staple total amount of 7mm based on wt part.However pass through this
Kind, which increases, does not see special advantage.It mainly increases the intensity of non-woven fabric, however the intensity is more easily by long filament
Amount adjust.
Certainly, the present invention is not limited to the embodiments shown in attached drawing and in above description and some examples, but want in right
Asking can further change in the range of book.
Example
With regard to parameter production of interest and many is tested according to hydroentangled material of the present invention.
Specific test used:
A kind of material to be tested is fastened on one block of plate by Taber experiment-, and abrasive wheel is formed on above-mentioned plate
It is moved in one circle, according to ASTM D 3884-92, there are certain modifications, the modification is by measuring a thin impermanent material
Rather than originally carpet that this method is designed for causes, modification includes using Calibrase CS-10 type abrasive wheel, but do not have
Increase additional weight, and is made only 200 turns.Generated abrasion loss is compared with an internal standard, herein 1 meaning
" abrasion fragmentates ", and 5 mean " without macroscopic influence ".Device used is U.S.'s button about N.Tonawanda
Taber Industries production " 5151 type grinding machine ".
L* brightness and b* color test-material to be tested " outdoor daylight " irradiation, and with from U.S.'s indiana
State, the Technidyne of New Albany, Technidyne, Color Touch type instrument colorimeter measure.
It is (blue according to the CIEL*a*b*Color Space L* (brightness) and b* of 1976 systematic survey test material of Cielab
Color) value, above-mentioned 1976 system of Cielab is equivalent in CIE the standard illuminant D65 and ISO/ illustrated in ISO 10526
CIE 1964 illustrated in CIE 10526 supplements Standard Colorimetric Observer, by being similar to those of 5631 defined of ISO
Under the conditions of measure determine.
This is a kind of system illustrated for color with specification, and the color is so-called to be corrected to from the colourimetric number measured
Based on the people of " standard observer " feels.
The CIE tristimulus value(s) measured is transformed into CIE L* and b* value by following formula, and Y and Z (are measured from colorimetric in formula
The value obtained) it is expressed as a percentage:
L*=116 (Y/100)1/3-16
B*=200 [(Y/100)1/3-(Z/118232)1/3]
This method is also in a pamphlet, " optical property of paper measures and control ", and 1996, the second edition,
Technidyne company produce, in be introduced.
These tests are carried out on according to nonwoven sample of the present invention and on authentic specimen, herein sample
Two sides be set to fabric side and free side, above-mentioned fabrics side is meant that non-when laying long filament, staple fiber and slurry fiber
Woven fabric is against the side for forming fabric, and above-mentioned free side is meant that by the supatex fabric of its laying difference fiber
Side.
Example 1
By the spunlaid filaments of 0.4m wide in the speed laying to forming fabric of 20m/ point, so that each long filament is not mutual
Bonding.The unbonded fiber net of spunlaid filaments is slightly compacted, and is transferred on the second forming fabric, for wet process to be added
Networking ingredient.By the high-order head box of a 0.4m wide, slurry fiber and the fiber dispersion of chopped staple fiber paving will be contained
It is put on the unbonded web of spunlaid filaments, and is discharged and siphons away excessive water.
Then unbonded spunlaid filaments and wet laid cellulose are mixed, and by 7,0KN/m2Pressure
It is lower to be bonded together with three branch pipe spun lacing networkings.Spun lacing networking is to carry out from free side, therefore slurry fiber and staple fiber are moved
Enter in spunlaid filaments web, and is sufficiently mixed with the spunlaid filaments web.It is supplied in spun lacing networking
Energy is 300kWh/ tons.
It is then dry with drum-type cross-flow drying device finally by spun lacing networking material dehydration.
The total basis weights of spunlaid filaments-staple fiber-slurry fiber compound are about 80g/m2。
The group of composite material becomes 25% filature fleece formation polypropylene filament, 10% chopped polypropene staple and 65% chemistry
Slurry fiber.The line density scanning electron microscopy measurement of spunlaid filaments, and it is the discovery that 2.3 dtexs.Composite material with
Short PP (polypropylene) fiber that is chopped of 1.7 dtexs is made together, and the above-mentioned short PP fiber that is chopped is respectively 6,12 with different length
And 18mm.
See Fig. 2, is shown by surface abrasion resistance intensity measured by the Taber abrasion test in free side with 6mm fiber
Manufactured material especially in the free side for leaving forming fabric, than accordingly with 12 and 18mm be chopped staple fiber made of material
Material is more preferable.
Example 2
Repeat the configuration in example 1 with the chopped polypropene staple of blue, so as to according to staple length study staple fiber with
The mixing of continuous spinning networking long filament and slurry fiber/formation is whole.Total basis weights of composite material are about 80g/m2,
And organizing becomes 25% spunlaid filaments, 10% chopped staple fiber and 65% chemical slurry fiber.The line of spunlaid filaments
Density is 2,3 dtexs.The length of the chopped 1,7 dtex PP staple fibers of blue is respectively 6 and 18mm.
When visually observing each material, it is obvious that the free side originally containing 10% blue staple fiber is more blue than fabric side (more
Secretly).The brightness of each material and a kind of Technidyne Color Touch type instrumental characterizing of color.Such as L* brightness value in Fig. 3
It is shown, fabric side is always brighter than free side-and the fiber retention that more colours is on their this side of laying.It is such as fine with 6mm
Composite Results made from tieing up are shown compared with the result obtained with 18mm fiber, fibre of the difference between two sides for 6mm long
Tie up it is smaller-show that shorter fiber is easier to flow to the other side.When passing through instrument evaluation B* color value, obtain similar
As a result, as shown in figure 4, this shows that the color difference when replacing 18mm long fibre with 6mm long fibre, between two sides is smaller, this also table
Bright shorter fiber is easier to flow to the other side.
Therefore these results support shorter staple fiber preferably to become with continuous unbonded spunlaid filaments grid
One.
Example 3
The configuration for repeating example 1 is tieed up, with chopped rayon short fibre to study chopped rayon short fibre's dimension and the short fibre of polypropylene
Dimension is whole compared to the mixing with continuous spinning networking long filament and slurry fiber/formation.Total basis weights of composite material are
About 47g/m2, and organize as 25% spunlaid filaments, the 10% chemical slurry fiber of chopped rayon short fibre's peacekeeping 65%.
The rayon short fibre's dimension that is chopped is 1,7 dtexs and with the length for 6mm.
Web can be tangled by 400kWh/ tons of entanglement.
Example 4
The configuration of example 1 is repeated with the black polypropene staple that is chopped, to study staple fiber with connecting according to staple length
Mixing/formation of continuous spunlaid filaments and slurry fiber is whole.Total basis weights of composite material are about 68g/m2, and
And composition is 25% spunlaid filaments, 10% chopped staple fiber and 65% slurry fiber.
The black PP staple fiber that is chopped is 1,7 dtexs and with the length for 6mm.
Web can be tangled by 400kWh/ tons of entanglement.
Example 5
The configuration of example 1 is repeated with the chopped polypropene staple of the chopped rayon short fibre's peacekeeping white of blue, it is short to study
Fiber is whole with mixing/formation of continuous spunlaid filaments and slurry fiber.Total basis weights of composite material are
About 80g/m2, and forming is 25% spunlaid filaments, 5% chopped blue rayon short fibre's dimension, 5% chopped white polypropylene
Staple fiber and 65% slurry fiber.
The chopped rayon short fibre's dimension of blue is 1,7 dtexs, and with the length for 6mm.The chopped PP staple fiber of white is 1.2
Dtex, and with the length for 6mm.
Web can be tangled by 300kWh/ tons of entanglement, be transferred on a kind of fabric of formation pattern, and pass through
135kWh/ tons of entanglement can form pattern.
The mechanical performance of example 3-5 is shown in table 1.These performances are satisfactory, and show do not losing other property
In the case where energy, it can achieve and reduce dual character and good wearability.
Table 1
Claims (19)
1. a kind of hydroentangled nonwoven material (8), the integral composite nonwoven material of formation good combination, including by
The mixing of synthetic staple (6) composition of the continuous filaments (3) of randomization, the natural fiber (5) of wet-laying and wet-laying
Object, wherein the synthetic staple is by carrying out the cutting of fibre bundle, preparing to generate single Cutting Length；It is special
Sign is that synthetic staple is with the length for 3-7mm, wherein does not have thermal bond points, the company between continuous filaments (3)
Continuous long filament, the natural fiber and the synthetic staple make the natural fiber and synthetic staple to be hydroentangled
Can be sufficiently mixed, and be fully distributed in entire non-woven material, and make the continuous filaments around itself and it is described
Natural fiber and synthetic staple distortion and entangled with its own and the natural fiber and synthetic staple, wherein
The mixture is by the continuous filaments (3) of 10-50%, the synthetic staple (6) of the natural fiber (5) of 20-85% and 5-50%
It is made, the weight that above-mentioned all percentages are all based on total non-woven material calculates.
2. hydroentangled nonwoven material described in accordance with the claim 1, which is characterized in that the length of the synthetic staple
For 4-6mm.
3. according to hydroentangled nonwoven material described in claim l or 2, which is characterized in that the continuous filaments (3) accounts for
The 15-35% of the weight of total non-woven material.
4. according to hydroentangled nonwoven material described in claim l or 2, which is characterized in that the natural fiber (5) accounts for
The 40-75% of the weight of total non-woven material.
5. according to hydroentangled nonwoven material described in claim l or 2, which is characterized in that the synthetic staple (6)
The 5-25% of the weight of the total non-woven material of Zhan.
6. according to hydroentangled nonwoven material described in claim l or 2, which is characterized in that continuous filaments is to be spun to
Net long filament.
7. hydroentangled nonwoven material according to claim 6, which is characterized in that continuous filaments is from including poly- third
It is selected in the group of alkene, polyesters and polyactide class.
8. hydroentangled nonwoven material as claimed in claim 1 or 2, which is characterized in that the continuous filaments of composite material
It is 40g/m that web, which has one to multiple,2Basis weights.
9. hydroentangled nonwoven material as claimed in claim 1 or 2, which is characterized in that the continuous filaments of composite material
It is 30g/m that web, which has one to multiple,2Basis weights.
10. according to hydroentangled nonwoven material described in claim l or 2, which is characterized in that synthetic staple (6) is
It is selected from the group including polyethylene, polypropylene, polyamide, polyesters, polyactide and artificial silk.
11. according to hydroentangled nonwoven material described in claim l0, which is characterized in that wherein the artificial silk is molten
Imitative cellulose fibre.
12. hydroentangled nonwoven material according to claim 1 or 2, which is characterized in that a part of synthetic staple
(6) it is coloring, accounts at least the 3% of supatex fabric total weight.
13. hydroentangled nonwoven material according to claim 1 or 2, which is characterized in that a part of synthetic staple
(6) it is coloring, accounts at least the 5% of supatex fabric total weight.
14. hydroentangled nonwoven material according to claim 1 or 2, which is characterized in that natural fiber (5) includes
Slurry fiber.
15. hydroentangled nonwoven material according to claim 14, which is characterized in that the slurry fiber is wood pulp
Fiber.
16. hydroentangled nonwoven material according to claim 1 or 2, which is characterized in that portion of natural fibres
(5) it is coloring, accounts at least the 3% of supatex fabric total weight.
17. hydroentangled nonwoven material according to claim 1 or 2, which is characterized in that portion of natural fibres
(5) it is coloring, accounts at least the 5% of supatex fabric total weight.
18. a kind of method for producing non-woven material (8), the non-woven material (8) includes continuous filaments (3), natural fiber
(5) and the mixture of synthetic staple (6), which comprises the fiber of continuous filaments (3) is formed on forming fabric (1)
Net；And the wet-formed fiber dispersion containing synthetic staple (6) and natural fiber (5) is applied to above-mentioned continuous filaments
Top on, wherein the synthetic staple is by carrying out the cutting of fibre bundle, preparing to generate single Cutting Length
's；The web containing above-mentioned continuous filaments, synthetic staple and natural fiber is formed in this way；And then by the web water
Thorn forms non-woven material (8),
It is characterized in that, the length that synthetic staple has for 3-7mm, wherein thermal bonding technology step is not applied to company
On continuous long filament, and spun lacing networking processing is carried out to the natural fiber and the synthetic staple and makes the natural fiber
It can be sufficiently mixed, and be fully distributed in entire non-woven material with synthetic staple, and surround the continuous filaments
It itself and the natural fiber and synthetic staple distortion and is twined with its own and the natural fiber and synthetic staple
It ties together, wherein the mixture is by the continuous filaments (3) of 10-50%, the natural fiber (5) of 20-85% and 5-50%
Synthetic staple (6) is made, and the weight that above-mentioned all percentages are all based on total non-woven material calculates.
19. the method for production non-woven material as claimed in claim 18, which is characterized in that the synthetic staple has 4-
The length of 6mm.
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|---|---|---|---|
| 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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-
2003
- 2003-10-31 SE SE0302874A patent/SE0302874D0/en unknown
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2004
- 2004-10-21 RU RU2006118807/12A patent/RU2364668C2/en active
- 2004-10-21 AU AU2004286185A patent/AU2004286185B2/en not_active Ceased
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- 2004-10-21 PL PL04793821T patent/PL1689923T3/en unknown
- 2004-10-21 WO PCT/SE2004/001519 patent/WO2005042819A2/en active Application Filing
- 2004-10-21 CN CN201410260490.9A patent/CN104278433B/en not_active Expired - Lifetime
- 2004-10-21 CN CNA2004800307048A patent/CN1871392A/en active Pending
- 2004-10-21 EP EP04793821.2A patent/EP1689923B1/en not_active Expired - Lifetime
- 2004-10-21 BR BRPI0416078-9A patent/BRPI0416078A/en not_active Application Discontinuation
- 2004-10-21 MX MXPA06003848A patent/MXPA06003848A/en active IP Right Grant
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| EP1689923B1 (en) | 2015-02-25 |
| MXPA06003848A (en) | 2006-07-03 |
| CN1871392A (en) | 2006-11-29 |
| HUE025424T2 (en) | 2016-04-28 |
| RU2364668C2 (en) | 2009-08-20 |
| CN104278433A (en) | 2015-01-14 |
| SE0302874D0 (en) | 2003-10-31 |
| BRPI0416078A (en) | 2007-01-02 |
| AU2004286185A1 (en) | 2005-05-12 |
| EP1689923A2 (en) | 2006-08-16 |
| ES2536544T3 (en) | 2015-05-26 |
| AU2004286185B2 (en) | 2009-10-29 |
| WO2005042819A2 (en) | 2005-05-12 |
| RU2006118807A (en) | 2007-12-20 |
| WO2005042819A3 (en) | 2005-10-06 |
| PL1689923T3 (en) | 2015-07-31 |
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