DE1635598A1 - Laminate - Google Patents

Description

Laminate

Ms invention relates to a resllienten fiber laminate, which is used for upholstery in upholstered furniture, pebbles, mattresses and the like as well as for the thermal insulation of clothes, Jackets, coats and the like are suitable.

There are very different types of materials for upholstery bags used, ranging from metal springs to ssu blocks of cellular Elastomer materials and even fleeces made of fiber-like materials such as animal hair or feathers and straw and fleeces made of natural fibers (Cotton, kapok) or synthetic fibers (polyethylene terephthalate company serf immaterial, acetate material) are sufficient. For those in quilts and bedspreads, sleeping bags, clothing for cold weather etc. Isoller raw materials used include nonwovens Cotton, kapok, polyethylene terephthalate fiber filler etc,

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Feathers and saunas or, more recently, thin, sheet-like or foil-shaped material made of polymer synthetic foam, which is obtained by cutting up, which is bonded to a fabric underlay by melting or by means of adhesive. To the different Defects found in such known materials include susceptibility to rot and mold, poor durability under repeated stress, and relatively high Weight with the filling densities, which allow the achievement of an adequate load-bearing capacity, the high costs with the « sen filling densities and, especially in the case of sheet-like or foil-like foam insulation material, a real drapability and sensitivity to dry cleaning treatments o

The present invention provides a resilient laminate available, in which a first fleece made of randomly (statistically disordered or randomly) arranged, microcellular Fibers and a "wide fleece made of dense, essentially non-cellular" fabric provided on at least one surface thereof Staple fibers through staple fibers penetrating into the first fleece of the second fleece are mechanically connected to form a coherent unit, the microcellular fibers being formed by an artificial, organic polymer, the closed one Forms cells in which substantially all of the polymer is in the form of film-like elements less than 2 microns thick.

Preferably the microcellular fibers are ultramicroselike

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These fibers are formed from a crystalline polymer formed and these fibers have a uniplanar orientation and uniform texture.

Pie microcellular fibers are formed according to another embodiment of polyethylene terephthalate and represent endless threads non-cellular fibers made of polyethylene terephthalate »

The microcellular fibers preferably contain a non-penetrable blowing agent and are particularly more preferred Way bloated.

In the best embodiment, the micron-shaped fibers are formed from polyhedral cells having a cross-sectional cross-section dimension of less than 1000 microns, the cells being a contain non-penetrable blowing agent and the aikrozell ~ shaped fibers have a density of less than about 0.05 g / csr and one Have diameters less than about 6.4 mm (0.25 inches)

When used alone, the microcellular fleece would be or Grain fleece is not free of defects, as the fibers are removed from the rate with corresponding losses of both thickness and grain » would continue to be subject to relative movement and tend to cluster together. The penetration of the staple fibers into the microcell-shaped fleece according to the invention results in a stronger Zueam-

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content of the latter and reduces the mobility of the microcell-shaped individual fibers, which enables excellent retention of the thickness as well as excellent load-bearing properties in the event of repeated etching «

In addition, the surface layer of the dense stapeifa « Bern as an insulator that eliminates or at least significantly reduces the tactile rough grip of the microcellular fibers

In which only on one of its main surfaces with a denser fleece Staple fibers covered, microcell-shaped fleece is a fenetry « Ren of staple fibers over the entire thickness of the microcellular fleece with the corresponding formation of a cohesive material before * If both sides are covered with one Staple fiber fleece, staple fibers of one or both layers can extend into the microcell-shaped fleece and thereby open it up penetrate its entire thickness.

It is sufficient if the penetration of the staple fibers into the microcellular fleece is only present at intervals, with this can be done randomly or in a patterned manner. The micro-cell-shaped fleece is penetrated by the staple fibers only at different intervals, the distance between the penetrators ei before is only limited to the extent that the composite material achieves a sufficient cohesion.

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The alkrosellföralgen fibers for the purposes of the invention must have closed cells in order to be able to hold back in these gases. Such fibers are therefore pneu- ' matic, d. H. the single cells act like whimsy balloons, and thus contribute to the greatest possible extent to both the load-bearing properties and the heat-insulating properties. Laminates in which the microcellular threads bu initially collapse allow easier handling; after an execution ^ shape allows the closed-cell nature of the microcellular sleeves Threads the subsequent post-inflation of the fabrics on the spot their full pneumatic potential.

The essentially single-celled, microcellular threads used in accordance with the invention are formed by closed, polyhedral cells with a maximum transverse dimension of less than about 1000 microns each, each cell being completely enclosed by thin, film-like polymer walls less than about 2 microns thick, by and foamed by essentially homogeneous. Foamed through and through, essentially homogeneously, is not only to be understood as a small spread of the cell sizes (narrow cell size distribution), but also that the thread is free from separately identifiable skins, layers or sheaths of dense polymer surrounding the foamed part, i.e. its Aussenflttohe of thin cell walls "is formed · · Di density of gasgeblähten, mikrosellfUralgen Fädrn is la Bereioh from 0.005 to 0.05 g / om ⁵ · density Polymernäute are undesirable

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because el «can tear with repeated pressure bending stress, this limits the pneumatic behavior of the enclosed foams, and since your volume per unit volume of enclosed gas is high, in order to achieve low densities can.

The penetrable blowing agent iet a gas, which the Penetrates cell walls so slowly in comparison with air that ea is kept surtick essentially permanently in the cells.

The content of geaohloaen cells usually becomes visually bleak

determined microscopically, but on the other hand it can also be determined according to an Oaaverdrfnungsteohnik, such as the technique of Remington and Pariser, "Rubber World", May 1958, p. 261, the is modified in such a way that one works with the smallest possible pressure differences. A predominant content of geaohloaen cells is qualitatively expressed in that a Gaageblähter, mlkroeell-shaped thread calibrates when pressed together swisohen your fingers pneumatiaoh to the touch and immediately afterwards again its original size and shape.

Nicroiell-shaped threads are also flexible and resilient in such a way that daaa the gas-inflated thread at a load of 0.70 kg / cm, lied to the length and the original Durohmesser area reached, whereby the load is maintained for 1 second, is subject to a reduction in the DiokenTest by at least 10 Jt and at

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Relieve an immediate thickness recovery to at least 50, preferably essentially 100 i » the original thickness results»

The concept of the dense fiber refers here to normal, non-cellular or non-foam-shaped sextile fibers with a paser density of at least 0.5 g / onr or above «under the surface covering of the core fleece with the fleece of the dense fiber depends on the intended use of the finished cushioning material only covers the surface of the core fleece, only the upper and lower surface of the Kemvlieeee or the upper and lower surface and the edges of the Keravlieee to understand.

A microcellular thread described in VSA patent 3 227 664 "is particularly desirable as a microcellular thread for use in the products according to the invention. Ultra-microcellular threads are also characterized by the fact that the polymer in their thin cell walls _p as In the patent specification, a uniplamar orientation "and a gTfiichrasiaaige texture ma.fiv'eist. Bleee the last two"? j ^: eiific ^: aaf-fcgtri resulted in the strength of the threads and theirs Partition walls in a Tboeonäsre high degree against

Me% 7easntliciie ^ properties eufv / eisende, milcrozslliform F & deu also a wide variety of both polymers and

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Polycondensates available. Typical of such polymers are Polyhydrocarbons such as polyethylene, polypropylene or polystyrene, Polyethers such as polyformaldehyde, vinyl polymers such as polyvinyl chloride or polyvinylidene fluoride, polyamides such as Polyeapro lactam, polyhexamethylene adipamide or poly-m ~ phenylenieophthal " amide, polyurethanes, such as the polymer of ethylenebischloroformate and - ethylenediamine, polyester, such as polyhydroxypivalic acid or Polyethylene terephthalate, mixed polymers such as polyethylene terephthalate ate / isophthalate, polynitrile, such as polyacrylonitrile or polyvinyl idenyanide, polyacrylates such as polymethyl methacrylate, and equivalent materials.

Bine planar molecular orientation of the polymer in the cell walls contributes significantly to the strength of the filaments. This class includes linear polyethylene, stereoregular polypropylene, polycaproletam, polyethylene terephthalate, polyvinyl chloride, and the like. More preferred is the class of polymers known for high resistance to gas penetration, such as polyethylene terephthalate and polyvinyl chloride.

The microcellular threads preferably contain sufficient amounts of non-penetrating material Blowing agent to create an ff in the cells

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to obtain pressure of at least atmospheric pressure.

The presence of the non-penetrable blowing agent in the cells results in an osmotic gradient for the penetration of air (or another gaseous ambient atmosphere). The cells of the microcellular threads thus contain, in balance with the air, not only air at about one atmosphere pressure »but also Breathable blowing agent at a given partial pressure. The total pressure is then at least equal to atmospheric pressure and ensures that the threads are completely gas-blown and swollen. The loss of air by passing through the cell walls upon compression is usually too small to prevent complete, immediate re-inflation upon relief. But even if there is no immediate, complete re-inflation, the osmotic gradient based on the non-penetrable inflating agent results in a spontaneous re-inflation due to the internal weight of the surrounding air. {

The rate at which an inflation gas penetrates a given polymer is limited by a diffusion capacity and its Solubility too. The blowing agents which are incapable of penetration should accordingly have the largest possible molecular size can be reconciled with the achievement of the required vapor pressure, and little or no dissolving power in relation to it have on the polymer. Examples of a «preferred · Klaeee duroh-

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Blowing agents incapable of penetration are the compounds whose Molecules have different chemical bonds than the polymer surrounding the gas, a low dipole moment and a very low, have atomic polarizability.

The blowing agents incapable of penetration can be selected from the group consisting of sulfur hexafluoride and saturated, aliphatic and cycloaliphatic compounds with at least one covalent fluorine-carbon bond, the number of fluorine atoms preferably exceeding the number of carbon atoms. Are preferably used as saturated aliphatisohe and cycloaliphatic compounds Perhaiogenalkane and Perhalogencycloalkane in which the halogen atoms werdenο formed of at least 50 $> fluorine These blowing agents may indeed contain ether oxygen linkages, but factional groups are preferably nitrogen atoms, carbon-carbon double bonds and reactive free "Specific examples of durchdringungsunfähige blowing agents are sulfur hexafluoride, perfluorocyclobutane, sym-dichlorotetrafluoroethane, perfluoro-i ^ -dimetbyleyclobutan, perfluorodimethylcyclobutane-Misehungen, 1,1,2-trichloro-1,2,2-trifluoroethane, CF ₃ CF ₂ CF _{2 0CFHCF?} , Chlorotrifluoromethane and Di chi ordi fluorine than. Mixtures of two or more non-thermosetting blowing agents are often beneficial.

The drawing shows a schematic and enlarged representation of a silicone according to the invention, in which a

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Nonwoven made of microcellular fibers as a middle layer between nonwovens consists of dense staple fibers · The spaced areas in which the dense fibers penetrate the core result in a stitched or quilted appearance.

The microcellular threads are laid down in a random manner, building up a core fleece of the desired area and thickness. This core is resilient when the microcele-shaped fibers are completely inflated and after deformation nimdeetens sswei mechanisms recoverable * frying are the threads εοΓΓΒΐ to Grimc! Their closed-cell, thin-walled, gaseous structure pneisBiaiiseh, so that they stand out from deformation Due to the recovery forces of the compressed, in the cells recover trapped gas. Second, the puffy, microcellular filaments provide considerable resistance to a bending out of its normal, elongated shape, so that an introduction of such deformations by a rough compression of the fleece through this bending results in a recovery force which both counteracts the compression and that Vliea returns to its original form when the compress «- sionaaueeenkreft comes to an end. Both recovery forces are hanging from oeta the remaining presence of the gas trapped in the cells, so that microcell-shaped threads with a diameter of over 1 1/2 mm (1/16 inch) for the cushioning materials (so that no slight loss of gas by diffusion from the inner cells to the outside can occur) are preferred. Zn this

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1Ü35598

In the interest of improved, aesthetic properties of the surface and the smooth chain, on the other hand, the thinner thermal insulation nonwovens, which are e.g. B ₀ ice intermediate feed is suitable, the finer micro-cell-shaped threads are preferred. In any case, however, the preferred threads in each cell contain, as described above, a proportion of non-penetrable gas.

The fully expanded, microcellular filaments give a very low density, generally in the range of 0.0 $ to 0.005 g / cm ⁵ . Hit the foam thread »core fleece is then united or connected by needles or in a similar way a fleece of dense fibers, whereby one works out γοη the side of the fleece of dense fibers. This results in a penetration or penetration of the ends of a part of the dense staple fibers into the core of the microcellular threads with binding (entanglement, entanglement or entanglement) in this and thus not only a connection of the layers, but also a reinforcement and immobility of the entire structure that allows subsequent handling, such as filling or plugging inlets or other cover materials. The length of the staple fibers in the dense fiber batts preferably averages at least 2 1/2 cm (1 inch) and more preferably at least 6.4 cm (2 1/2 inches).

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The pneumatic core fleece of microcellular filaments can range from a thin sheet or foil-like material only two to three fiber diameter to a fleece or wadding material several inches (1 inch to 2.54 cm) thick. The thicker fleeces are more suitable for upholstery purposes, the thinner ones are more suitable for thermal insulation aweoke. A three-layer material with a thin fleece of microcellular threads as the middle layer, which has a fabric backing on one side and a cover fleece made of dense staple fibers on the other, which is bound into the middle layer by needles or hydraulic entanglement, is also a very desirable material form Similar composite materials with underlays made of gauze (Cheese Cloth) or coarse burlap are suitable for furniture or mattresses upholstery. Surface covering layers made of dense fibers of low weight per unit area are preferred for thin thermal insulation materials, such as fiber filler material of 10 g / m (0.3 OB./yd.), While for upholstery materials, where a very soft, resilient, rich surface is important preferably works with thicker nonwovens of up to 170 or 340 g / a ² (5 or 10 oz./yd. ² ).

The microcellular fibers for use in Kemvliee are Threads or staple fibers of sufficient length, e.g. with a ratio of length to diameter of at least about 10, usually by simply feeding it in (fiddling) or in some other random manner to form a layer of interlocking fibers

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Q-803 ή

to be dropped. Bas Hadeln is a well-known technique at which point a phrase repeated through the surface into the Material is introduced, whereby in the present invention the linden of a part of the staple fibers in the surface fleece taken down into the core fleece and incorporated into it. Hydraulic entangling is a related technique in which fine jets are subordinated to high Pressurized fluids (water) with sufficient impact pressure across the surface of the material leads to parts of the fibers Drift out of the surface fleece into the core fleece into which they are embedded (embedded)

The production of the fiber composite material according to the invention can done according to a convenient, continuous process by making a random fleece of the microcellular shape, directly from the Spinning device is fed threads onto a running belt, one of or both surfaces of the running fleece with a at the same speed sulphurous fleece, denser stapeifa * sern occupied, and leads the Schioht assembly through a device, what duroh needles or hydraulic entangling of the layers to each other, and those for the individual cushions, pillows,. Fillings etc. cut off suitable pieces. If desired, the composite fleece can be impregnated with elastic adhesives in order to increase the durability of the fleece even further and minimize fiber tapping. Flame retardants and similar additives can be sprayed or

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Apply diving techniques.

The following examples serve to further illustrate the invention.

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A 1-1 pressure vessel is charged with 400 g of polyalkylene terephthalate (dried at 210 ° C.), 300 ml of methylene chloride (over Calcium hydride dried), 54 g of fluorotrichloromethane and 46 g of perfluorocyclobutane (non-penetrable blowing agent), heated while rotating the container around its transverse axis to 220 ° C, cools then down to 210 ° C, brings the container into a vertical position, connects to a nitrogen gas source of 84 attt (1200 peig) and

squeezes the solution through 12 holes 0.076 mm (0.003 ") in diameter and 0.152 mm (0.006") in length. They thus obtained ultramikrozellfSrmigem threads are guided directly through a Venturiluftduse and held electrostatic charge under mini- (painter tension over a slowly rotating Hagnesiumstab and then (2 stored on a covered with a paper sheet aluminum plate of 61 χ 91 cm χ 5 feet), The plate is moved during the laying down so that a random or statistically disordered structure of the fleece on a uniform bead is obtained. After laying several fiber layers over the entire surface, the fleece is sprayed with water in order to load the fibers with weight and to collect them further to facilitate.

In this way you build a fleece with a 2 1/2 om (1 inch) bead,

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which is then placed in an infeed oven at 110 ° .0 to remove the water and cause the threads to be completely inflated, the thickness of the fleece being 3.8 es (1 1/2 inches) bunitimt. The density of the "insular, distended, ultramicrogel-shaped ends""loafseeds" is about 0.03 g / cm2 and their average diameter about 0.15 egg.

On one surface of this® tile® "a thin layer" is placed on the card and the garnet opener treated Pplyäthylentere-. _ Iththalat Vaeerfüllnaterial with a Sinselfae art lter- ύοώ. 4 »75 den 'and hydraulically integrated _φ inde.tr. ffl'an where the surface is carried away by a high pressure water jet which is obtained from a probe with an exit opening of 0.076 mm (0.005 inch) "at" 35 atm (500 psig) bridge dried ι its peelable layer is .. 0.005 g / cm ^ (0 »3-PoimdsAubikfuae), * of which 15 percent by weight are allotted to the fiber fabric. Pie.s © s fleece is suitable as upholstery material for upholstered furniture for places like Aris® ₉ Ear pads (for wing chairs) and head pads * on which pleasing aesthetic surface properties and a soft initial cushion effect are desired.

Similar to Example 1, a further portion of ultramicrossoll-shaped polyethylene terephthalate threads using 400 g of polymer em * 215 ml of methylene chloride and 45 ml (70 g) of 1 _f t _f 2-tri

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chlorine-Ί, 2 * 2 ~ trifluoroethane, whereby at a nitrogen pressure of 56 atmospheres (800 peig) a 24 ~ Üoch- _! Spinning nozzle (hole diameter O ₉ 102 mm and length 0.203 mm (0.004 to 0.008 x inch). The threads emerging at a speed of approximately 1000 m / min. (1100 yards / min.) Are collected in a random pile and 20 Then dried in a convection oven at 110 ° C. These completely expanded, pneumatic threads now have a density of about 0.03 g / cor, a relative viscosity of 42, hot strength of 0.45 g / dan and a Single thread titer of 39 den "To explain the production of the composite polyester fabrics according to the invention from collapsed, closed-cell threads, a portion of these ultramicro-Bell-shaped polyethylene terephthalate threads are subjected to an inflation treatment by immersing them for about 4 minutes" in boiling methylene chloride, and then from the Removed from the bath, spread out and air-dried. As a product, collapsed threads with a> * permanent density of about 0.3 g / cm * are formed.

A random fleece of these collapsed polyethylene terephthalate threads of 78 g / m ² (2.3 o / yd.) Basis weight is covered on both sides with a carding wadding (surface weight 39 »0 g / m ^{2 by} W. T, 15 ob. / Yd ² ) made of polyethylene terephthalate fiber filling material with a single fiber titer of 4.75 denier and this structure is hydraulically bound on both sides with a high pressure water jet in a 5.1 cia block pattern. The "quilted" fleece or wadding material obtained is sufficiently bound in order to

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Habitation, including the inflation of the faeces of the collapsed, ultra-microcellular fibers, must be permanent. Naehaufblähung to the compound web 15 is Hin "in a boiling bath of equal volumes of Methylenehlorid and 1.1 _r 2 Triohlor-i, 2,2-trifluoroethane dipped and then 15 min. In a ümluftoten at 100 ° G dried. The ultramicrocelial filaments are expanded to a constant density of about 0.03 g / cm "by this development; the composite nonwoven Dioke after this treatment is 4.1 cm (i 6O ₉ inches), and the apparent density of 0.003 g / cm ⁵ (0.20 pounds / cubic foot) This product is suitable as an insulating-'Üwisehenfutter, the one whose Isoliervermugen previous fiber wadding of three to ten times the area weight is equivalent ».

An excellent lining material is produced in a similar way by placing a random fleece of 34 g / m (1 oss./yd-) surface weight of collapsed, ultra-microcellular threads with a density of about g / cm * on one surface ® with a carded wadding made of polyethylene terephthalate fiber filler material with a single fiber lter of 4.75 denier and 34 g / m disc weight and covered on the other with a heyon taffeta intermediate lining The ends of a portion of the staple fibers are pressed through both the ultra-microfiber core fleece and the rayon fabric, and in this way the ice sheets are effectively fastened to one another in a 5.1 cm block pattern. The obtained fleece or wadding material is g @ n% end bound * around it

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can inflate as above (although the duration is reduced to 4 minutes in order to keep damage to the fabric to a minimum) an apparent density, excluding the fabric backing, of O _v OO27 g / cm ⁵ (0.17 pounds / cubic fuse) · This resilient composite material is suitable directly as an intermediate lining or putter, with a ^{lg outer surface on the fiber filler material surface n} -fabric applies and the fieyonetpff-Pläöhe serves directly as an exposed inner surface.

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For the production of partially collapsed, micro-cellular polypropylene threads, equal parts of isotactic polypropylene {"Pro-fax" 6223 from Hereules} and fluoroalchloromethane are mixed on a “non-volatile” extruder and the solution obtained is extruded at 88 ° C and pressure (1250 peig) through an ajliudrleehe opening of 0.114 "ma (4.5 aiii) DuröhmeBB« r of 0.20 im (B aiii) length, with the overheated J & Buagsaittelti a microaellfiSrMigar W @. & En . susceptible ;. Mese mlkroeellfSrnlgen ääen ¥ "* Ground of polyhedral or Mehrfläehnar-Zellengebildei ;, which in turn -Be * formed of textured 'Vändan having a thickness of less than 2 microns. If the inconsistent with the ambient air, the threads are in a partially defaled state, the density being 0 * 0249 * g / ca ^, the

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knife 0.356 mm (H all) and the heat resistance is 0.4 g / üen . These endless threads are collected under the spinning opening as a fleece of 78 g / m (2.3 oa./yd·) area weighted from randomly deposited threads.

This fleece made of -tell-collapsed. " microcrystalline sell shaped yarns * in © in "Sshioht & TRUCTURE with a OntereohiQht from a batt of density staple fibers v as" filling ⁸ @ n 34 g / m (1 OSU / ydl) Fläetangewieht _e pleasant for the view to particularly aesthetically © Oberfläsh @ n © ig @ nscha i ten 'a mixture of dense polyethylene terephthalate fibers treated on the Garnett opener with a single sertites * of 1 _P 5 d © B made of staple fibers of -3.8% or 0.6e staple lengths (1 1/2 bsw 1/4 inch) 'in a ratio of 70 ι 30 is used ₉ and a d © ete © hicht from one watt. E of the same polyethylene terephthalate "Stapelfa @ er"Hische' / on 68 g / m surface weight (. 2 "o" / yd. ²⁾ © ingesetsst that has been auror 'hydraulically bound _v nan by them on einer'14 κ 14. "foraminous with eiti © r ^ sf öffnuia laugh" of-about $ 45> the water jets from Holes of 0.1.76 'ras (7 mil) diameter exposing which® longitudinally © tee © Masser tob 35 atti (500 psig) feed the Rotoe® in 20 lioehern / g 1/2 ca (1 nominal) - corresponding n. Distances * that are offered. The .Dreischichtsnaufbau..wird solidified by subjecting V§r & f © ndUxmg the same apparatus with water "drückem v © n hl® su 6 © ®ttl (850 psig) of the cover layer forth in a 7 ₉ 6-OA him Blookaaster (3 inches) 'hydraulic binclöt - D®r amfallendüg pit iieM @ f ^ © s ©! ⁶ coated composite bsait & t @ 1η © η ge

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To completely inflate the microcellular fibers forming the core of the material, the composite is exposed to perfluoroyolo = butane vapor for 50 minutes, which is in a closed pressure vessel in equilibrium with the 55 ° C liquid phase 100 ° C transferred and held for 15 min. In this. As a result of this treatment, the microgel-shaped polypropylene threads are completely puffed up to a level of only 0.0132 g / cm, while the thickness of the composite pile fabric increases at the same time and the apparent density O ₉ OO56 ^ (0.35 pounds / cubic foot) reached.

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Claims (1)

Q-80.5 "23" Jani 196T Resilient © ** laminate, in which a Ywoven made of randomly arranged »fflikroaellfönaigtii fibers and a fleece on at least one of its surfaces made of dense, essentially non-cellular staple fibers through Fen *? trate are fibers from the Stapelf aser ^ flowing in ea © ¥ read the fflikrozellförmigen fibers chanis m @ @ M su e ± n®T \ unit having connected "wherein ä ± @-shaped fibers formed from an artificial ,, organiseM © ^ polymers be, the closed babble forms »in which essentially da® entire ^ © Ι ^ μ® ^ ®. % n "Form of film-like elements -which is 2 micron Bieke. 2. Fabric according to claim t _g, characterized in that the polymer is crystalline and the microsellular fibers are ultralaikroselliform® fibers of uniplanar orientation and smoothly flexible. 3 "S * toff aaoH On @ prm © k 2" by g @ lstfims @ i @ Met _e that the ultramikrosellfilsmigen Faserm JSnälQEtäümi mum phthalate are. Fabric naoh @ im®® o4 «f a» hFev € fK isp. Ab9SV & Aui t M »5," thereby - 108819/1409. BADORtGlNAl marked, daee di @ diets, borrowed from w @@ shaped staple fibers are polyethylene terephthalate barrels, .5, substance according to one or more of claims t Ms 4. thereby characterized as being the cells of the ultramicroselliform Fibers contain a non-penetrable blowing agent 6. Fabric according to claim 5 »characterized in that the micro- f cellular fibers are fully inflated. 7. The fabric of claim 1, .dadurch, in that the aikro .eellfönaigen-containing fibers of a blowing agent Surohdringungeunfähiges, pol ^ Eder shaped ropes sit an average Qiiera1 »W & eeeisQS less than 1000 microns are formed and a Diohl · - ^ © m below about'0t05 - * e / ett. and less than about 6 1/2 mm (about .0 »25 solos) in diameter. ' . * 23.-109819/1409 Empty space