CN104520487A - Glazed nonwoven fabric and methods of manufacture - Google Patents
Glazed nonwoven fabric and methods of manufacture Download PDFInfo
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- CN104520487A CN104520487A CN201380043253.0A CN201380043253A CN104520487A CN 104520487 A CN104520487 A CN 104520487A CN 201380043253 A CN201380043253 A CN 201380043253A CN 104520487 A CN104520487 A CN 104520487A
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- looping
- supatex fabric
- smooth rollers
- fabric
- heating
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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
- D04H3/14—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 thermoplastic yarns or filaments produced by welding
- D04H3/147—Composite yarns or filaments
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
- Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T442/608—Including strand or fiber material which is of specific structural definition
- Y10T442/614—Strand or fiber material specified as having microdimensions [i.e., microfiber]
- Y10T442/626—Microfiber is synthetic polymer
Abstract
A glazing method for improving abrasion resistance using a heated smooth roll to melt the lower-melting-point portion of bicomponent fibers as the spunbond web passes over the heated smooth roll. Because there is no external pressure exerted in a nip by an opposing second roller, as in calendering, the outer surface of the web which does not contact the heated smooth roll remains essentially unchanged and the nonwoven fabric exhibits no compression as a result of the glazing process. The roll temperature and dwell time (roll diameter, wrap angle and line speed) are controlled for the purpose of surface treating only one side of the nonwoven fabric to improve abrasion resistance while allowing the air permeability and web thickness to remain essentially unchanged.
Description
background
The disclosure relates generally to the fabric (such as, fiber web or fiber web laminated material) be made up of thermoplastic fibre or long filament.Specifically, the disclosure relates to supatex fabric, such as, and the supatex fabric made by melt spinning thermoplastic's material.
Term used herein " supatex fabric " refers to be arranged with random fashion (that is, not having discernible pattern) and the fiber web of the individual fibers of orientation, long filament or line.The example of supatex fabric comprises meltblown fiber web, spun-bonded fibre net, carding fiber net, air-laid fibre web, wet-laid fibrous web and spunlace webs and comprises the composite fiber web of two or more non-woven layers.
Term used herein " spunbond " refers to wherein by extruding molten thermoplastic polymer material from multiple spinning head fine capillary, then reduces fast to extrude the process that filament diameter forms long filament by stretching.Spunbonded non-woven fabrics or fiber web, by collection random laying spun-bonded continuous yarn formation on the surface, collect surface as porous web or band.Spun-bonded fibre net by multiple method bonding known in the art, such as, hot-rolling calendering, through air bonding (being generally applicable to multiple component spunbond web) or make fiber web pass through saturated chamber at an elevated pressure.
The spunbonded non-woven fabrics formed by continuous bicomponent fiber is known in the art.Term " bicomponent fibers " used herein " refer to any fiber or long filament (that is, continuous or discontinuous) that are made up of the two kinds of different polymer being spun into monofilament or fiber together.Preferred each bicomponent fiber is made up of two kinds of different polymer, and described two kinds of different polymer are arranged in the substantially constant ground zones of different of arranging across bicomponent fiber cross section, and extend along fibre length basic continous.Continuous bicomponent fiber is the fiber made by extruding two kinds of polymer from identical spinning head, wherein in identical long filament, comprises two kinds of polymer.According to layout and the relative quantity of two kinds of polymer, the structure of bicomponent fiber can be categorized as core-Pi, side by side, tip, micro Denier, blended fiber etc.
Core-Pi bicomponent fiber comprises the core be made up of a kind of thermoplastic and the skin be made up of different thermoplastic material.Core can be concentric or centrifugal relative to skin, and can have identical or different shape with skin-deep ratio.Expecting that the surface of fiber has the character of the skins such as such as gloss, dyeability or stability, core can promote intensity, when reducing cost etc., utilize skin-core structure simultaneously.
Nonwoven web can be used on methods known in the art heat bonding, comprises a bonding or decorative pattern bonding.Point or decorative pattern bonding generally comprise in the heating of fibroreticulate zone of dispersion and pressurization, such as, by making the roll gap of fiber web through being formed by knurling rolls and smooth roll or two knurling rolls.One or two roller can be heated, with at the discrete heat bonding nonwoven web such as point, line, region.Can at multiple thermal bond points thermal point bond supatex fabric of separating or fiber web.Term used herein " hot decorative pattern bonding " refers to a kind of process, comprises the roll gap that supatex fabric or fiber web are formed through being added thermo-optical anvil roller by heated engraved roll and cooperation.Several roll structures (such as, single-pass, bilateral, S shape looping and three groups of idler roller (three-stack idler roll) structures) are well known.
Supatex fabric can be used for wide range of application, such as operative blanket, diaper, feminine hygiene, towel, amusement or protective textile and geotextiles.In these application a lot, one or two surface abrasion resistance of supatex fabric is necessary.
The various methods improving supatex fabric ABRASION RESISTANCE are known.In a kind of known method, supatex fabric is made to pass through the roll gap formed by two calenders.After this calendaring operation, the thickness of calendered fabric is lower than the thickness of non-calendered fabric.Another kind method uses has the thermal point bond calendering system (main adhesive mechanism) being greater than about 22% bond area.This obtains the fabric with higher stiffness.Another kind of art methods utilizes adhesive.This obtains the fabric with higher stiffness, and affects the capillarity of fabric.
Known thermoplastic bi-component's spunbonded non-woven is flexibility/silkiness/drapability, and has very poor ABRASION RESISTANCE, or has excellent ABRASION RESISTANCE, and does not have flexibility, silkiness or drape characteristics.Thickness is generally the good measure of drapability.That is, for specific basic weight, spunbonded non-woven fabrics is thinner, finer and close, and this is converted into the drapability of reduction.
Therefore, manufacture is needed to have raising ABRASION RESISTANCE and do not have the method for the supatex fabric of adverse effect drapability, capillarity and/or fabric feeling.
general introduction
Theme of the present disclosure improves ABRASION RESISTANCE at least side of the supatex fabric be made up of thermoplastic, keeps the method for high drapability and gas permeability simultaneously.These fabrics can be used for medical applications.Nonwoven material through hospital operating room of being everlasting for multiple use (such as, patient's drop cloth, surgical staff clothing).If form the bead of nonwoven material or loose fiber by the activity (the hand fore-aft travel etc. of band gloves) of operation personnel, and these enter the wound of patient, just may form embolism in cardiovascular system, this has serious consequence to patient.
According to some embodiments, available method of lustering manufactures the spun-bonded fibre net of bicomponent fiber (such as skin/core fibre, it has the skin be made up of thermoplastic, and the fusing point of skin is lower than the fusing point of core thermoplastic).According to an embodiment, improve the comparatively low melting point part of method of lustering smooth roll melting bicomponent fiber of heating when spun-bonded fibre net passes through the smooth roll of heating of ABRASION RESISTANCE.Due to the external pressure do not applied at roll gap by the second relative roller as in calendering, the fibroreticulate outer surface not contacting heating smooth rollers remains unchanged substantially, and supatex fabric does not show compression due to upper photoreduction process.In order to the side of surface treatment supatex fabric, control surface temperature and the time of staying (depending on roller diameter, looping angle and linear velocity) of heating smooth rollers, to improve ABRASION RESISTANCE, make gas permeability and web thickness substantially remain unchanged simultaneously.In order to make the opposition side glazing of fabric, this process can be repeated.
According to an embodiment for the election, when fiber web leaves the roll gap formed with relative engraved roll by heating smooth rollers, by least side glazing making the circumferential surface of fiber web looping heating smooth rollers make decorative pattern bonded nonwoven fibrous webs.
Method of lustering disclosed herein can be applicable to much different thermoplastic bi-component and spins molten fabric, includes but not limited to nonwoven fabric and SMS (spunbond-melt blown-spunbond) laminated material.These method of lustering be best suited for have be less than 40gsm basic weight and be less than 22% bond area spin molten fabric.In one application, make the nonwoven fabric glazing be made up of polyethylene/polyester skin/core long filament, obtain that there is the surface of improving ABRASION RESISTANCE.
The advantageous effect evaluating method of lustering disclosed herein comprises the ABRASION RESISTANCE detecting untreated, glazing and calendering spunbonded non-woven fabrics.The ABRASION RESISTANCE detecting each fabric sample has two kinds of methods: (1) uses Taibo (Taber) Wear Tester, the period (for subjective visual test) of damage detected with Taber Abrasion Resistance Cheng Shengfa; (2) after each fabric sample 40 circulation of wearing and tearing by identical Taibo Wear Tester, calculate mean Taber scraping (Taber shaving) loss in weight, use the process comprised wearing and tearing samples weighing/scraping/weigh again.
Because the method for lustering improving ABRASION RESISTANCE does not rely on by heating and the conpressed fibers net that pressurizes, the fabric of glazing keeps high thickness/basic weight ratio and excellent ABRASION RESISTANCE.ABRASION RESISTANCE supatex fabric disclosed herein comprises thermoplastic filament, and has thickness (micron, μm)/basic weight (gsm or g/m of at least 5
2) ratio, wherein at least side of supatex fabric comprises the thermoplastic filament of at least part of graduation, and this side has the Average weight losses being not more than 0.62% through Taibo scraping.According to an embodiment, the opposite side of fabric does not have the thermoplastic filament of graduation or part graduation.
Specifically, spun-bonded fibre net is disclosed herein, described spun-bonded fibre net comprises bicomponent thermoplastic filament, and there is the thickness/basic weight ratio of at least 5 μm/gsm, wherein at least side of spun-bonded fibre net comprises the bicomponent thermoplastic filament of at least part of graduation, and this side has the Average weight losses being not more than 0.62% through Taibo scraping.
The method of lustering of different embodiments is below described in detail in detail.Heating and pressurization on the surface that a kind of method improving nonwoven surfaces ABRASION RESISTANCE disclosed herein is included in a part of supatex fabric, and do not carry out any heating or pressurization on the surface at another of this part supatex fabric.Heated by heating smooth rollers circumferential surface and pressurize, preceding sections supatex fabric looping circumferential surface faces toward the part at looping angle and is in contact with it.Looping angle is in the scope of 25 to 85 ° (containing 25 ° and 85 °).The surface temperature of heating smooth rollers in the scope of 290 ℉ to 330 ℉, preferably 300 to 330 ℉.
Another aspect improves the method for nonwoven surfaces ABRASION RESISTANCE, and described method comprises: (a) a part of looping heating smooth rollers of supatex fabric circumferential surface facing to looping angle part and the position be in contact with it supports supatex fabric; (b) supatex fabric is advanced with tensioning state, contact with the some parts looping keeping its some parts and the circumferential surface of heating smooth rollers to face toward looping angle, wherein the length on the surface of the looping part of supatex fabric is the diameter of the circumferential surface of heating smooth rollers and the function at looping angle.Optionally, when a part of supatex fabric contacts with heating smooth rollers looping, a part of circumferential surface of at least one removable deflector roll of another part supatex fabric looping is also in contact with it, and the looping angle of this part regulates relative to the position of heating smooth rollers by changing removable deflector roll.
Another aspect manufactures the method with the decorative pattern bonded nonwoven fibrous webs improving ABRASION RESISTANCE surface, and described method comprises: (a) random deposition on moving conveyor belt or screen cloth extrudes long filament, to form nonwoven web; B () forms discrete thermal bonds region by making nonwoven web through the roll gap formed by knurling rolls and heating smooth rollers in nonwoven web, at nonwoven web by time wherein, roll gap forms discrete heat bonding region continuously according to decorative pattern in nonwoven web; (c) by making a part of circumferential surface of nonwoven web looping heating smooth rollers, the surperficial glazing of decorative pattern bonded nonwoven fibrous webs is made.The end section of the looping part of nonwoven web is arranged in roll gap.
Following discloses other side of the present invention.
accompanying drawing is sketched
Fig. 1 is the diagram of the known device of the thermal bonded nonwoven fabric that display manufacture is made up of bicomponent filament.
Fig. 2 to 4 is for showing according to different embodiments process thermal bonded nonwoven fabric surface to improve the diagram of the related device of ABRASION RESISTANCE.
Fig. 5 is SEM (scanning electronic microscope) image of the glaze surface according to the spunbonded non-woven fabrics of teaching herein through glazing.
Fig. 6 is the SEM image of the non-glaze surface according to the spunbonded non-woven fabrics of teaching herein its opposed surface glazing.
Fig. 7 is the mean Taber scraping loss in weight (%) that shows different fabric sample relative to the diagram of thickness/basic weight ratio (μm/gsm).The data point of spunbonded non-woven fabrics difference classification is shown with following symbol table: () is untreated; (zero) through glazing, the loss in weight≤0.62%; (Δ) through glazing, loss in weight >0.62%; () calendering.
Fig. 8 be display from fabric sample surface scraping during loose or projected fiber paring blade relative to the diagram of the side view of the tram of fabric sample.
Below with reference to accompanying drawing, wherein in different accompanying drawing, similar key element has identical Reference numeral.
describe in detail
The different embodiments of the device of the ABRASION RESISTANCE at least one surface of improving the supatex fabric manufactured by the spunbond nonwoven process known is described below with reference to Fig. 2 to 4.Before that device of description, the existing known method described for the manufacture of hot decorative pattern bonding non-woven fabric.
Fig. 1 illustrates the known device manufacturing heat bonding spunbonded non-woven fabrics is described.According to this known spunbond method, the random layout bicomponent filament 2 prepared from spinning head 4 forms supatex fabric, and spinning head 4 receives two logistics 6 and 8 be made up of corresponding different polymeric material from a pair extruder 10 and 12.Preferred spinning head 4 is the type forming skin/core or side by side bicomponent long filament.Two kinds of polymers compositionss are combined into bicomponent filament in spinning head, and bicomponent filament has and is positioned at cross section two zoness of different and the two kinds of components extended continuously along filament length.For the manufacture of the spinning head of bicomponent filament well known, be therefore not described in detail herein.In a known embodiment, the Cheng Sikong (not shown) in spinning head is arranged in a line or multirow, with at the curtain by being formed during spinning head 4 extruded polymer to the long filament 2 of downward-extension.When long filament 2 leaves spinning head 4, they are contacted by quenching gas (such as, air), and quenching gas is guided from filament curtain side (as seen in Figure 1) or both sides (not shown) side direction by impeller 14.Air-flow is enough to make long filament quench at least partly.In addition, fiber draw unit or aspirator device 16 are arranged lower than spinning head 4, for stretching and attenuating long filament 2.
Long filament 2 is random to be deposited on moving conveyor belt 18, and conveyer belt 18 is driven by conventional drive source (not shown), to cycle through one group of roller 20, thus forms the loose fiber net 24 of random deposition long filament.Optionally can arrange the aspirator 22 be applicable to 18 times at conveyer belt, to help to deposit long filament 2.It should be noted that, although display single spraying silk head group component and single layer filament fiber web, also can provide other spinning head sub-assembly online, to form heavier fiber web or multi-layer nonwoven fabric.
Still with reference to figure 1, the supatex fabric 24 of advance enters from conveyer belt 18 and passes through the pressure nip that formed by a pair heating calender 26 and 28.One of calender has the smooth circumferential of contact nonwoven web 24 side, and another calender has engraved roll that is outstanding or face, land decorative pattern at its circumferential surface, the opposite side of embossed surface contact nonwoven web 24.One or two calender can heat in inside, such as, in a usual manner, by the inside of heat transfer fluid circulation by roller.Be enough to heated yarn in time of calendering roll gap, temperature and pressure condition, make the polymers compositions melting flowing together compared with low melting point, be fused together in the zone of dispersion array determined by the decorative pattern on patterned calender roller to make long filament.Then, the hot decorative pattern bonding non-woven fabric 30 of gained is made to proceed to take up roll 32.
According to the embodiment of following discloses, the hot decorative pattern bonded spunbonded fabric of process further, to improve ABRASION RESISTANCE on its one or two surface.Fig. 2 shows the embodiment on processed offline nonwoven fabric surface.The embodiment on Fig. 3 and 4 display online (that is, after hot decorative pattern bonding and before the nonwoven fabric that reels on take up roll) process nonwoven fabric surface.
Such as, after manufacturing decorative pattern bonded spunbonded fabric, by the method described in Fig. 1, in order to further process, take up roll 32 can be sent to diverse location.Upper photoreduction process carries out in that position.Fig. 2 display is according to the flow chart (unnumbered roller is the simple deflector roll not affecting upper photoreduction process) of the method for lustering of an embodiment.Nonwoven fabric 30 from roller 32 unwinding, and passes through around the smooth roll 36 of heating under tension in the way to take up roll 34.The looping part of fabric 30 and the circumferential surface of heating smooth rollers 36 face toward the part contact of central angle (being referred to herein as at " looping angle ").[should be appreciated that, accompanying drawing is schematically, and not drawn on scale, the looping angle described in Fig. 2-4 is interpreted as representing the looping angle in the claimed scope of this paper].Although a part for fabric 30 contacts with heating smooth rollers 36 looping, the part-circular periphery surface of removable deflector roll 38a and 38b of upstream and downstream part difference looping of fabric 30, and be in contact with it.By changing the position of deflector roll 38a and 38b relative to roller 36 position, as shown by arrows, adjustable fabric 30 is around the looping angle of roller 36.Looping angle can in the scope of 25 to 85 °.The time of staying is by looping angle and wire velocity control.The part that fabric 30 surface is in contact with it is heated and pressurization by the circumferential surface of heating smooth rollers 36.Also by regulating the relative velocity of machine and polishing roll to change pressure.The surface temperature of heating smooth rollers can in the scope of 290 ℉ to 330 ℉, preferably 300 to 330 ℉.The diameter of heating smooth rollers 36 is preferably 350 to 400mm.On these, optical parameter can use during the course, for the side glazing of decorative pattern bonded spunbonded fabric comprising PE/PET (that is, polyethylene/polyethylene terephthalate) skin/core long filament.It also can be used for the ABRASION RESISTANCE of the poly nonwoven fabric of raising 100%.The bonding that glazing causes surface filaments/fiber to improve.This ABRASION RESISTANCE causing only glazing side to be improved.Reach this point and adversely affect fabric thickness, capillarity or fabric feeling.Specifically, thickness changes and is less than fabric through calendering but not the situation of glazing.
Optional at nonwoven fabric behind side glazing, by repeating process light on another side shown in Fig. 2, or passed through around the second heating smooth rollers (not showing in fig. 2) under tension by glazing fabrics, the wherein heating circumferential surface of non-glazing side contacts second roller of fabric.
Select embodiment according to the confession shown in Fig. 3, carry out glazing online, that is, after hot decorative pattern bonding and before the decorative pattern bonded spunbonded fabric that reels on take up roll.Fig. 3 shows the flow process (same, unnumbered roller is the simple deflector roll not affecting photoreduction process) of online method of lustering.As described in reference diagram 1 in the past, the pressure nip of nonwoven fabric by heating calender 26 and 28 formed by a pair of advance.A calender has smooth circumferential, and another calender is on its circumferential surface, have engraved roll that is outstanding or face, land decorative pattern.Be enough to heated yarn in time of calendering roll gap, temperature and pressure condition, make the polymers compositions melting flowing together compared with low melting point, be fused together in the zone of dispersion array determined by the decorative pattern on patterned calender roller to make long filament.In the way towards take up roll 32, the smooth roll 36 of decorative pattern bonded spunbonded fabric 30 looping heating.Looping angle and roll surface temperature can describing in identical scope with method shown in previous references Fig. 2.Equally, by changing the position of removable deflector roll 38a and 38b relative to heating smooth rollers 36 position, adjustable fabric 30 is around the looping angle of heating smooth rollers 36.Then, fabric 30 is in the part in removable deflector roll 38b downstream, and it is present glazing in side, evenly can be wound on take up roll 34 by means of secondary roller.But the roller number in reel system does not affect upper photosystem, and can omit secondary roller.
Optional at nonwoven fabric behind side glazing, passed through around the second heating smooth rollers (not showing in figure 3) under tension by glazing fabrics, can light, wherein the heating circumferential surface of non-glazing side contacts second heating smooth rollers of fabric on another side.
According to another for selecting embodiment, the invention provides a kind of method that manufacture has the decorative pattern bonded nonwoven fibrous webs improving ABRASION RESISTANCE surface, described method comprises: (a) random deposition on moving conveyor belt or screen cloth extrudes long filament, to form nonwoven web; B () forms discrete thermal bonds region by making nonwoven web through the roll gap formed by knurling rolls and heating smooth rollers in nonwoven web, at nonwoven web by time wherein, roll gap forms discrete heat bonding region continuously according to decorative pattern in nonwoven web; (c) by making a part of circumferential surface of nonwoven web looping heating smooth rollers, the end section of nonwoven web looping part being arranged in roll gap simultaneously, making the surperficial glazing of decorative pattern bonded nonwoven fibrous webs.
Be shown in Fig. 4 with a part for manufacture method described in previous paragraphs.Make the pressure nip of spun-bonded fibre net 30 by heating calender 26 and 28 formed by a pair.In this embodiment, roller 26 has smooth circumferential, and roller 28 is on its circumferential surface, have engraved roll that is outstanding or face, land decorative pattern.Be enough to the long filament of nonwoven fabric is fused together in the zone of dispersion array determined by the decorative pattern on patterned calender roller 28 in time of calendering roll gap, temperature and pressure condition.Decorative pattern bonded spunbonded fabric 30 immediately preceding the part in the roll gap downstream formed by roller 26 and 28 along the circumferential section looping heating smooth rollers 26 facing to the looping angle within the scope of 25 to 85 °.The surface temperature of heating smooth rollers 26 can in the scope of 290 to 330 ℉, preferably 300 to 330 ℉.Equally, looping angle is regulated by moving deflector roll 38 relative to heating smooth rollers 26.Then be wound in a usual manner on take up roll 32 in the decorative pattern bonded spunbonded fabric 30 of side glazing.
Use preceding method, the thermoplastic nonwoven fabric having and improve ABRASION RESISTANCE and be satisfied with drapability, capillarity and/or fabric feeling can be manufactured.These methods are preferably applied to have the decorative pattern bonding non-woven fabric of the bond area being less than 40gsm basic weight and being less than the fabric gross area 22%.Test has shown thickness/basic weight ratio that these supatex fabric have at least 5 μm/gsm.When fabric only side glazing, then that glaze surface comprises the thermoplastic filament of at least part of graduation, and there is through Taibo scraping the Average weight losses being not more than 0.62%, and the opposite side of supatex fabric does not have the thermoplastic filament of at least part of graduation.In addition, glazing side was not damaged in Taber Abrasion Resistance becomes to restrict test method before 13 circulations.When fabric all glazing, each glaze surface has aforesaid properties.
Fig. 5 is the SEM image of the glaze surface of the non-adhesion area of the spunbonded non-woven fabrics comprising PE/PET skin/core long filament.Can see in this image, surface filaments graduation to a certain degree.
By contrast, Fig. 6 is the SEM image of the non-glaze surface of non-adhesion area according to the spunbonded non-woven fabrics manufactured from identical long filament of teaching its opposed surface glazing herein.Can see in this image, the non-graduation of surface filaments.
Fig. 7 is the mean Taber scraping loss in weight (%) that shows different fabric sample relative to the diagram of thickness/basic weight ratio (μm/gsm).The data point of the fabric sample of different classification spunbonded non-woven fabrics is shown with following symbol table: () is untreated; (zero) through glazing, the loss in weight≤0.62%; (Δ) through glazing, loss in weight >0.62%; () calendering.
Obtain from table 1 (below) in the data of Fig. 7 with graphic depiction.The loss in weight (%) belonging to the fabric sample of aforementioned four class spunbonded non-woven fabrics shows in the respective column of table 1.Each loss in weight is with Taibo scraping weight loss tests method (following), 32 are repeated to the mean value of the loss in weight that sample measures.Table 1 is also listed basic weight, thickness, thickness/basic weight ratio and during Taibo wear test, is arrived the period damaged.Finally, the standard deviation (%) of each group of 32 weight loss determinings is listed from secondary series from right to left.
Table 1
List in table 2 for the thermoplastic of glazing sample and glazing parameter, table 2 also marks control sample numbering 25716 thermoplastic used.List in table 3 for the thermoplastic of calendering sample and calendering parameter, table 3 also marks 36-gsm control sample numbering 257290 thermoplastic used.
Seen in table 2 and 3, there are some differences between samples.Difference is around the type of PE used and skin (PE)/core (PET) ratio.Use the polyethylene that two kinds different: Alathon 4620 to be high density PE, Alathon 6018 be more high density PE.These two kinds of polyethylene (non-glazing) of test display all have bad ABRASION RESISTANCE (superficial phenomenon).After glazing, the ABRASION RESISTANCE of two models is all improved.Control sample numbering 25716 is commercial spunbond fabric, have the PE/PET ratio of 40/60, and other samples all listed has 48/52 ratio (PE/PET).Control sample 25730 (36gsm) is another kind of commercial spunbond level, for about all calendering samples listed same stages (sole difference does not have rear calendering) used.Difference between two control samples is PE, PE/PET ratio used and basic weight.In table 2, the upper optical parameter of listed different glazing sample is different (parts of experimental design).
Table 2
* differential degree=coiler speed-polishing roll speed
Table 3
As prerequisite arrives, percent weight loss Taibo scraping weight loss tests method listed in table 1 obtains.Design the ABRASION RESISTANCE of this test method quantitative assessment spunbonded non-woven and composite (that is, laminated material).Prepare sample according to this method, be connected to Taibo wear device, and with comprising two foot wheel abrasions of abrasive grain, take turns wear test sample when rotated for two.Eachly rotate to be a circulation.An outside rubbed sample of emery wheel, that is, towards circumference, another inside rubbed sample, that is, towards center.Take turns at sample surfaces through 40 circulations altogether of complete circumference (circulation).This allows to evaluate ABRASION RESISTANCE relative to material fabric or particle at all angles.The fiber of mentioning produces fluffy ring outward appearance at the point contacted with emery wheel on sample.(term used herein " fluffy " refers to the fine hair shape outward appearance of fiber after producing wearing and tearing by fibroreticulate fiber lift-off).Weigh sample (Wt upon wear
1), scrape away discrete material, then weigh sample (Wt again
2).Then the Taibo scraping loss in weight is calculated, according to the weight (Wt of sample after 40 Taibo abrasion cycles
1) weight (Wt of wearing and tearing sample identical with after scraping
2) difference divided by weight Wt
1then be multiplied by 100 to calculate:
(1)
Repeat sample to 32 that get from each fabric sample and measure the Taibo scraping loss in weight, then single data point is reached to each fabric sample and calculate the mean Taber scraping loss in weight based on 32 measured values.
Device for carrying out Taibo scraping weight loss determining comprises following: (1) Taber Model 503 Abraser friabilator; (2) emery wheel (having 4 years recommendation life-spans) in CS-10 (part number 125320); (3) S-11 scaife (refacing discs) (for polishing CS-10 emery wheel); (4) model machine is cut, for the preparation of 5 inch sample; (5) Oster 76 type scraper, connects 000 blade; (6) weigh scale.
For each nonwoven matter sample, cut 32 from fabric sample and repeat sample or sample.Repeat sample to each 32 and measure the loss in weight after 40 Taibo abrasion cycles and scraping, then to each group of 32 weight loss values calculating mean values and standard deviation.
The test procedure measuring the Taibo scraping loss in weight of each independent sample is as follows:
(1) guarantee that CS-10 emery wheel polishes.Wheel often can polish the minimum usable diameter of 1 inch as required, as shown on wheel label.If wheel is new, should take turns with S-11 scaife polishing CS-10.Advise two polishings (using the dish that two independent) each 50 circulations, to ensure that wear surface contacts with sample surfaces.If previously used CS-10 to take turns, should be polished after 100 circulations.A S-11 scaife is used to experience 25 circulations.Press beginning key to start to polish CS-10 wheel.Stop key is pressed after 25 circulations.Discarded S-11 scaife (no matter whether having used 25 or 50 circulations) after a single use.
(2) each wheel arm is made to preload 250 grams of pressure.
(3) pin can be utilized at wearing and tearing arm rear portion.The purposes of this pin is the weight keeping emery wheel identical with counterweight, with compensation work wheel weight.Do not use weighting distribution wheel in this method.
(4) sample of 5 inches of external diameters is gone out to have with the cross cutting be applicable to.Then an anxious aperture in this sample.This hole should be applicable to the screw rod of Taibo test instrument.
(5) sample (in test side direction) is placed on the rubber blanket of sample fixer, and sample is fixed on appropriate location.
(6) regulate hold-down ring, tightly to coordinate along sample, keep it not wrinkling.
(7) two wheel fixed assemblies are reduced.
(8) make cycle counter reset to 0, press Start and start abrasion cycles.
(9) Taibo friabilator is run, until sample is through 40 abrasion cycles.Stop is pressed 40 circulation end.
In order to image data, each experience wear sample should be marked with sample concentrator marker, then with a gram weight for weighing experience wear sample, be accurate at least 4 decimals.[in formula (1) by this scraping before example weight be designated as Wt
1.] then, the region scraping side of sample (such as, the glazing side of glazing sample) should worn and torn at sample.The people carrying out scraping operations should examine type scraping knife (shaver) sheet totally, without any loose fiber and dust.Then, the Oster 76 type sharpener of 000 sharpener (clipper) sheet with connection should be used to scrape away any loose or projected fiber at eroded area.Test instrument should ensure that the leading edge of paring blade is parallel to sample, and avoids digging sample.Fig. 8 display from paring blade 44 (being connected to hand-held sharpener 42) during 40 the scrapings loose or projected fiber of fabric sample surface relative to the side view of the tram of fabric sample.During scraping in evaluation test sample, experimenter (if necessary, should use lamp) and watch fabric sample from different perspectives under good light condition.Experimenter should ensure to have removed loose/projected fiber.If find any loose or projected fiber, should scraping sample again.The final result of scraping process should be the sample not having loose/projected fiber.Although experimenter can be observed the inaccessiable short cut-out of paring blade/cut protruding end, do not attempt these fibers of scraping.
After the wear surface of scraping each sample, sample should be weighed again, again be accurate to 4 decimals.In formula (1) by this scraping after example weight be designated as Wt
2.Now, by by before scraping and scraping after example weight Wt
1and Wt
2insert formula (1), the Taibo scraping loss in weight (%) can be calculated.
As prerequisite arrives, Taibo abrasion cycles Taibo listed in table 1 weares and teares into rope method and obtains.This is a kind of subjective test method, and be designed to provide performance to grade in the circulating cycle, wherein sample runs to damage, and records spot failure in the circulating cycle.First test character make sample fluff with circular pattern, and the circulation continued makes this fluffing balling-up, forms rope form, and collects along the interior periphery of eroded area.See along inner rim altogether 80% one-tenth rope time, be defined as spot failure.Sample preparation, test apparatus and Taibo to be worn and torn into rope method calibration instrument identical with the Taibo scraping loss in weight (%) method.
The test procedure that Taibo weares and teares into rope method is as follows: run Taibo test instrument 3 continuous circulations.Instrument is stopped when 3 circulations complete.Check into rope.Continue test, next circulation, restricts until observe along inner rim 80% one-tenth.The period spent when reaching 80% one-tenth rope is recorded as spot failure.To altogether 4 repeat sample repeating test.Taibo weares and teares into the mean value that rope cycle performance is these 4 samples.
Although described different embodiments, one skilled in the art will understand that and can carry out various change not departing under the scope of teaching herein, and available equivalents replaces its key element.In addition, a lot of amendment can be made not departing under its base region, adapt to those professors to make concrete condition.Therefore, expect that the scope of the following stated claim is not limited to disclosed embodiment.
Phrase used in claim " ... in scope " comprise the end points of that scope, term " Average weight losses " refers to based on being not less than the Average weight losses that 32 are repeated sample measure and calculations.
Claims (25)
1. improve a method for nonwoven surfaces ABRASION RESISTANCE, heating and pressurization on the surface that described method is included in a supatex fabric part, and another of part does not carry out any heating or pressurization on the surface described in this supatex fabric.
2. the process of claim 1 wherein by heating smooth rollers circumferential surface heat and pressurization, circumferential surface described in the described part looping of this supatex fabric facing to looping angle part and be in contact with it.
3. the method for claim 2, wherein said looping angle in the scope of 25 to 85 °, containing 25 ° and 85 °.
4. the method for claim 2, the surface temperature of wherein said heating smooth rollers is in the scope of 290 to 330 ℉.
5. the method for claim 4, the surface temperature of wherein said heating smooth rollers is in the scope of 300 to 330 ℉.
6. improve a method for nonwoven surfaces ABRASION RESISTANCE, described method comprises:
(a) at the circumferential surface of a part of looping heating smooth rollers of supatex fabric facing to the part at looping angle and the position be in contact with it supports supatex fabric; With
B () makes supatex fabric advance with tensioning state, contact with the some parts looping keeping its some parts and the circumferential surface of described heating smooth rollers to face toward looping angle,
The length on the surface of the looping part of wherein said supatex fabric is the diameter of the circumferential surface of described heating smooth rollers and the function at described looping angle.
7. the method for claim 6, the surface temperature of wherein said heating smooth rollers is in the scope of 290 to 330 ℉.
8. the method for claim 7, the surface temperature of wherein said heating smooth rollers is in the scope of 300 to 330 ℉.
9. the method for claim 6, wherein said looping angle is in the scope of 25 to 85 °.
10. the method for claim 6, wherein said heating smooth rollers and knurling rolls form roll gap, and the end section of the looping part of described supatex fabric is arranged in described roll gap.
The method of 11. claims 6, wherein when the described supatex fabric of a part contacts with described heating smooth rollers looping, the part of the circumferential surface of the removable deflector roll of supatex fabric looping described in another part is also in contact with it, and the looping angle of this part regulates relative to the position of described heating smooth rollers by changing described removable deflector roll.
12. 1 kinds of manufactures have the method for the decorative pattern bonded nonwoven fibrous webs improving ABRASION RESISTANCE surface, and described method comprises:
A () random deposition on moving conveyor belt or screen cloth extrudes long filament, to form nonwoven web;
B () is by making the roll gap of described nonwoven web through being formed by knurling rolls and heating smooth rollers, discrete thermal bonds region is formed in described nonwoven web, at described nonwoven web by time wherein, described roll gap forms discrete heat bonding region continuously according to decorative pattern in described nonwoven web; With
C (), by making a part of circumferential surface of heating smooth rollers described in described nonwoven web looping, makes the surperficial glazing of decorative pattern bonded nonwoven fibrous webs.
The method of 13. claims 12, the surface temperature of wherein said heating smooth rollers is in the scope of 290 to 330 ℉.
The method of 14. claims 13, the surface temperature of wherein said heating smooth rollers is in the scope of 300 to 330 ℉.
The method of 15. claims 12, wherein said looping angle is in the scope of 25 to 85 °.
The method of 16. claims 12, the end section of the looping part of wherein said nonwoven web is arranged in described roll gap.
The method of 17. claims 12, wherein when the upstream portion of described nonwoven web contacts with described heating smooth rollers looping, a part of circumferential surface of the removable deflector roll of downstream part looping of described nonwoven web is also in contact with it, and the looping angle of this part regulates relative to the position of described heating smooth rollers by changing described removable deflector roll.
18. 1 kinds of supatex fabric, described supatex fabric comprises thermoplastic filament, and there is the thickness/basic weight ratio of at least 5 μm/gsm, the at least side of wherein said supatex fabric comprises the thermoplastic filament of at least part of graduation, and described side has the Average weight losses being not more than 0.62% through Taibo scraping.
The supatex fabric of 19. claims 18, wherein said thermoplastic filament is bicomponent sheath/core long filament.
The supatex fabric of 20. claims 19, wherein said bicomponent sheath/core long filament comprises polyethylene sheath and polyethylene terephthalate core.
The supatex fabric of 21. claims 18, the melting in multiple zone of dispersion of wherein said thermoplastic filament, the gross area of described multiple zone of dispersion is less than 22% of the described fabric gross area.
The supatex fabric of 22. claims 18, wherein said basic weight is less than 40gsm.
The supatex fabric of 23. claims 18, wherein said side becomes in rope test method at Taber Abrasion Resistance not to be damaged before 13 circulations.
The supatex fabric of 24. claims 18, the opposite side of wherein said supatex fabric does not have the thermoplastic filament of at least part of graduation.
25. 1 kinds of spun-bonded fibre nets, described spun-bonded fibre net comprises bicomponent thermoplastic filament, and there is the thickness/basic weight ratio of at least 5 μm/gsm, the at least side of wherein said spun-bonded fibre net comprises the bicomponent thermoplastic filament of at least part of graduation, and described side has the Average weight losses being not more than 0.62% through Taibo scraping.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/495572 | 2012-06-13 | ||
| US13/495,572 US20130337714A1 (en) | 2012-06-13 | 2012-06-13 | Glazed Nonwoven Fabric and Methods of Manufacture |
| PCT/FI2013/050566 WO2013186431A1 (en) | 2012-06-13 | 2013-05-23 | Glazed nonwoven fabric and methods of manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104520487A true CN104520487A (en) | 2015-04-15 |
| CN104520487B CN104520487B (en) | 2016-12-28 |
Family
ID=48607301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380043253.0A Active CN104520487B (en) | 2012-06-13 | 2013-05-23 | Glazing supatex fabric and manufacture method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130337714A1 (en) |
| EP (1) | EP2861791B1 (en) |
| CN (1) | CN104520487B (en) |
| WO (1) | WO2013186431A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109371570A (en) * | 2018-10-22 | 2019-02-22 | 山东恒鹏卫生用品有限公司 | A kind of smooth roll hot rolling elastic non-woven and its manufacturing method |
| CN112281307A (en) * | 2020-10-16 | 2021-01-29 | 连云港柏德实业有限公司 | Non-woven fabric and preparation method thereof |
| CN115074917A (en) * | 2022-07-15 | 2022-09-20 | 厦门当盛新材料有限公司 | Novel bacterium-blocking breathable fabric and preparation method thereof |
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|---|---|---|---|---|
| AU2015218232B2 (en) | 2014-02-17 | 2017-06-22 | 3M Innovative Properties Company | Scouring article and methods of making and using |
| US20160009074A1 (en) * | 2014-07-14 | 2016-01-14 | Stephen J. Metcalf | Inert clear cylinder with inerting rollers |
| WO2017180413A1 (en) | 2016-04-12 | 2017-10-19 | 3M Innovative Properties Company | Foldable multi-purpose nonwoven hand pad and method of use |
| WO2017187320A1 (en) | 2016-04-29 | 2017-11-02 | 3M Innovative Properties Company | Cleaning articles including scouring bodies that form printed instructions |
| CN115175648B (en) * | 2020-02-27 | 2023-08-25 | 花王株式会社 | Nonwoven fabric for absorbent article and absorbent article provided with same |
| CN115216954A (en) * | 2022-07-08 | 2022-10-21 | 白鑫 | Elastic fabric processing method |
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| CN112281307A (en) * | 2020-10-16 | 2021-01-29 | 连云港柏德实业有限公司 | Non-woven fabric and preparation method thereof |
| CN115074917A (en) * | 2022-07-15 | 2022-09-20 | 厦门当盛新材料有限公司 | Novel bacterium-blocking breathable fabric and preparation method thereof |
| CN115074917B (en) * | 2022-07-15 | 2023-09-19 | 厦门当盛新材料有限公司 | Novel bacteria-resistant breathable fabric and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130337714A1 (en) | 2013-12-19 |
| CN104520487B (en) | 2016-12-28 |
| EP2861791A1 (en) | 2015-04-22 |
| EP2861791B1 (en) | 2016-09-14 |
| WO2013186431A1 (en) | 2013-12-19 |
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