DE1435113A1 - Non-woven fabric for clothing - Google Patents

Description

E. I. OU PONT DE NEMORS ANO COMPANY 10th and Market Streets, Wilmington, Del. I9898, V.St.A.

Non-woven fabric for use in clothing

The invention relates to nonwoven fabrics for clothing use made of crimped synthetic organic fibers or threads, which are dotted at points of intersection of the fibers or threads by means of a synthetic organic polymer binder are bound to each other.

On the one hand, voluminous, bonded fiber nonwovens with a soft feel and good flexibility, on the other hand, dense, bonded nonwovens with good tensile strength and tensile strength. But while the first ones are too voluminous and do not have sufficient strength properties, the latter are too stiff and not very drapable (cf. US Pat. No. 2,277,049, in particular page 5, left column, lines 5 to 12). For these reasons, the known fiber nonwovens are not suitable as high-quality clothing materials.

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Synthetic organic materials are used as starting materials for nonwovens. Pipes and threads from the shortest staple fibers up to Continuous filaments and polymer binders with different Young's modulus has been proposed.

It is known to store the binders in amounts of up to 20 % for pliable fiber nonwovens in dots in the nonwoven and to glue the fibers or filaments at intersections (cf. USA patent 2 900 291, in particular column 1, lines 59 to 45, Modern Textiles Magazine October 1956, pages 62 to 65J Melliand Textilberichte XXXIII, February 1952, pages 112 and 115). .

Crimped fibers have also been used in nonwovens to increase the resilience of the. Improve products (U.S. Patent 2,784,152).

In Belgian patent 564 806 "earth * Fib rid" (a Explanation follows later) and your foundation is funded for nonwovens made from non-crimped, synthetic organic fibers. The products disclosed there «the leather or f 11 have a dental character, but are not suitable for such use * purpose where, in addition to good traction, and travel stability depends on excellent drapability and a soft hand. For example, you cannot go to Manufacture of ladies' gowns, suits, Koetüewn, Mint, "In, Sweaters and the like" used "" earth.

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In general, it reads saying that the main reason why conventional fiber nonwovens are not used for firm, flexible fabrics of the type mentioned above are useful because they are too stiff and volunlnus and are therefore difficult to drape.

The aim of the invention is now to provide nonwovens made of synthetic organic fibers or continuous filaments, which the known products in terms of the desired properties such as good tensile strength, tear resistance »Flexibilltit» Softness and density are superior «

Ss now sets the following task:

A nonwoven fabric made from crimped synthetic organic fibers or continuous filaments and a synthetic organic binder can be created which, by selecting the type and amount of binder, has a high tensile strength, rice strength and density and high curvature and high average free path of the fibers b * .w. , jidlotfäd ^ n has a good drapability and softness that it is suitable for the production of, for example, high-quality items of clothing that previously could only be made from woven fabrics.

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With the solution of this issue, huge advantages are achieved. «*

The new fiber nonwovens have high tensile strength, Rsisefestigkeit, Drapable, softness and density. Because of this and other properties they can be used in areas previously reserved for woven fabrics.

In contrast to woven and knitted fabrics, however, the new nonwovens can be made directly from the single fiber or the single thread, so that the various operations in the classical textile technology between the spinning of the thread and the production of the finished fabric can be saved for the most part »

The object on which the invention is based is achieved by that a nonwoven fabric made of crimped for clothing purposes synthetic organic fibers or threads used at intersections the fibers or threads point-like by means of a synthetic organic Polymer binder are bound to one another, which in Quantities from 3 - 50 # based on the weight of the nonwoven fabric is present, a modulus of elasticity (E) between 0.002 and 25 g / den and is present in such amounts that the equation

Binder {%)

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is sufficient, is created, which is characterized in that a) the fibers or threads have at least one-eighth crimps / om, * b) the average free path of the patern or thread between binding points is at least 1.85 times the straight-line distance between them these bond points, o) the density of the fiber nonwoven is between approximately 0.28 and 0.7 g / cm ⁵ and d) the ratio of tensile strength to stapler stiffness is greater than 0 * 84 kg / cm.

X) Ie production of the nonwovens according to the invention he « follows by synthesizing, preferably in a random manner Fibers or filaments made of organic polymers are deposited in the form of a flaky structure or fleece. During or After the deposit, the binding agent is added to the structure in the amount defined above in such a way that it is distributed throughout it. The binder results in the addition or in an analogous treatment, such as heating, a bond. The fleece can be used with threads that are curled or that develop curl during or near deposition, or even after tying.

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The random® deposition of the threads and / or fibers on the flat structure can take place after every traditional sequence. In line 3, one can separate fibers from a coating of tar-twist from sapier processing maaol & inen «In a similar way they can be deposited from a gas stream. Binding threads can be continuously peeled off on a device of the Xn ? _{Ig e} 1 gtgeigttn type and directly peeled off «

Single threads or fibers in this fabric have, due to the high crimp να% ύ dsr £ rc * «ea free fiber length atteisohen the binding points, greater lateral freedom and flexibility in three dimensions between unbound crossing points and binding points. These fabrics have a high drapability and softness «a high tensile strength, a low volume and a soft feel in the same area as fabric.

Drapability is determined by measuring the length of the fabric, which is necessary so that »I receive the goods without the influence of Holding forces deflects so far from the horizontal that it touches an inclined plane, ciie at an angle of 41 1/2 ° is inclined and emanates from the horizontal. You work with a block of wood or another horizontal surface which anesthetizes the inclined plane inclined at 41 1/2 °. on A strip of goods 2.54 cm wide is placed on the surface in such a way that its narrow side lies between the transition point

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the horizontal and the inclined plane. The stripe is then pushed forward over the low level until it is free End touches the 41 1/2 ° inclined surface of the test block. The ait "C" calculated drape stiffness is half that Prohen length in centimeters, which you can see over the band of the horizontal surface extends beyond.

The volume of a substance is equal to the volume per unit weight. The tensile strength is measured at a width of 2.54 cm Sample strip In conventional catfish on an Inetron tensile strength tester, the purpose of the invention is the door Tensile strength is defined as the strength at tree temperature and ambient relative humidity of 65 pounds «That The ratio of the tensile strength of a fabric to its drape stiffness is of value when comparing fabrics according to the invention with conventional fabrics, pilsen and paper.

The drawing serves to further explain the invention; seig in her

1 shows a schematic representation of a type of device, which is suitable for the separation of threads as a flat structure oder.Vlies'but manufacture of the products according to the invention suitable,

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2 shows a part of a nonwoven toffee according to the invention. which is tied to crosshair dots.

3 shows the structure of a larger part of a nonwoven fabric according to the invention in a large enlargement _{or the like}

In a preferred method for producing the fiber nonwovens according to the invention, the device is according to. Fig. 1

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used. Pie emerging from the spinneret 2 "freshly formed threads 1 pass a suction nozzle 3" through the inlet. let 4 pressurized air is supplied. You air flows in the same direction as the threads and refines «oriented and continues the ", the suction nozzle 3 is charged by an electro-8tatisehen potential source 5 to a high" potential (+ S), which is positive in the case shown here. 3> i © source 5 is via the line 6 on the suction nozzle 5 "and the other pole is grounded via line 7. Haoh passing the suction nozzle 3, the charged threads 6 on the receiving organ 10 see below the two-dimensional structure 9 collected »which is located on a pad partially shown at 11. Bas receiving organ 10 is either grounded through the TS line or received through the Line 13 from the potential source 5 a charge «whose sign is opposite to that of the charge of the threads 6» wherein the ground line 12 at the switch 14 is interrupted. Under are subject to the influence of high electrostatic charges

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the single threads of a separation and a completely statistically unordered (random) deposit on the collecting device to form a veil o The paths in which the single threads run, show no parallelism. The filaments are also subject to spontaneous crimping to form a Layer of randomly distributed threads with at least 11.8 and often 39.4 or more weeds lb / cm. The fiber layer will then bound in accordance with the above-mentioned critical binding conditions, whereby an extraordinarily strong, soft, drapable and flexible nonwoven fabric.

The * number of crimps per unit of length in a thread or a Spun fiber is conventionally by direct observation by means of a microcopee with a sealed ("sealed") Ocular or duroh projection determined.

The fibers or filaments in the nonwoven fabric lie in a statistically disordered shape and, apart from their crimp, so strongly in a loopy or bend-like or twist-like shape ("loopy") that on average every fiber or each thread in the layer has a free thread length equal to at least one and a quarter times the shortest distance between Binding points of the fiber or thread with other fibers or Has threads.

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For the purposes of the invention, thread crimp is to be understood as meaning that the strength (amplitude) of the deviation from a straight line less than three times the radius of curvature the crimp is, whichever is the last-mentioned is steadily less than ale 1.3 cm. Thread sole hoops moving bends and turns always deviate from a straight line Line of at least 1.5 on together with a radius of curvature of at least 0.5 Qa or «inen Radius of curvature of more than 1.3 on, under "free" The length of the thread is the length of each piece of thread Expansion of the thread part so that any crimps or loops or bends or turns are removed.

Fig. 2 shows a close-up view at high magnification the structure of a nonwoven fabric according to the invention, the ruffled and loopy or twisting «* or fecal-like present fibers or Endloefftdefe 15, which are bound at points 16 at a distance from one another.

Fig. 3 shows an enlarged part of a non-woven fabric according to the invention, which comprises a plurality of the substance components shown in FIG. 2, and explains the regular arrangement of the Faeern and spaced tie points throughout Material.

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You can bind the fibers and / or threads in a number of ways take place. For example, synthetic organic polymer binders can bond by melting and / or by mechanical entanglement or entanglement with one another. In case of melting * «use the binding agent one have a lower melting point than the fibers and / or threads, which are stt bind.

One way of tying is to spin low-resistance binder threads together with the threads to be tied. she fadensohioht is then βrhitEt, so that the low-ohmic melting point threads result in a sole weave at the pad crossing points.

Another excellent way of bonding is to spray or flock "fibrids" onto the filamentary fibers as they are forming. "Fibrid" binders create a bond through mechanical entanglement or entanglement with one another. In cases fell, however, is desirable with niedrigsohmeleenden "work eu Pityiden ¹ · and duroh heating to cause some melting of the same. But even without Schmeisbehandlung be using""binders business suitable nonwoven fabric fibrids produced.

When using τοη "fibrid" binders, especially in large Proportions, the binder material can be

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Sieve through mechanical the staple fiber a VeAra ^ leaf v & m EslKdesteaas about O ₉ OOS g / des FlbflSteilechen a @ ^w Casiaiian Freeness Number ¹ *) high vrasaerabsorption capacity

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Uruokv load of about 39 g / cm ² at least 2.0 g water / g Teilohea back. In the production of the fibrids, any purely synthetic polymer material which is solid in the case of space can be used.

Preference is given to the "fibrids", their leaf products 12 hours drying at a temperature below the Softening point of the polyamide from which they are made (i.e. the minimum temperature at which a Sample of the polymer «leaves a moist & pure, if »on with the sample under moderate pressure over the smooth Surface of a heated sloek), have a firmness of at least about 0.005 g / den.

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^N Fibrii ^l -2eil®h'en and their production are described in detail in the Belgian patent 564 206.

According to a preferred embodiment, a non-woven fabric is used Fabric according to the invention from 3 to 50% of a "fibrid" binder and at least 50% by weight of a spontaneously expandable

thread (or ®ln © r fiber) made of synthetic polymer. ; · At i @ r Amed @ Mung uate? i§i forms the flow of heat

from · Preferably bil-85 wt. # des of a loading or loading ^ mgut aias G _r ysitla, otle © li @ n organic

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A epomtEn mm§ä @ @ lmb, r®s fiber »tm ^ Fadengut is a material that is more subject to its original Length in suitable heat treatment an increase in length from 3 to 25 mn ^ or. Bie spontaneous expansion in a fibrous BSW. Filament made from purely synthetic organic polymers is described in Belgian patent 566 145 in relation to polyester. However, spontaneous expansion is known in the case of fibers made from other synthetic organic polymers. For example, © la is polyamide; which is formed by the conversion of p-xylylenediamine and azelaine »@ äur®, spontaneously expandable. Condensation poly

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Merisate in general, such as polyester, polyamide © ma polyurethanes, can be expanded spontaneously. Also acrylic »olefin« vä & other polymers of the addition type are spontaneously newAalmtar »They polyester fiber represents the preferred spontaneously misaturated out for the nonwoven staple fiber structure © according to the» Irfindung, while for the continuous thread products both Äljraaid and polyester threads prevent will.

Oyster the binder and the spontaneously expandable fibers bsw Threads can be incorporated into these preferred products with a smaller amount of other fibrous materials than conventional ' Staple fibers made from materials such as polyamides, polyesters, polyurethanes, aorylharsen, polyethylene, polypropylene, beyon, cellulose acetate and the like · You can use crimped like auoh Uncrimped fibers of this type work if the amount of such fiber is below $ 15 based on total weight of the substance, the desired properties of the substances according to the invention are not impaired, and they can sometimes be improved »a.

In addition to the binder and the fibrous component, the substances according to the invention can be used in moderate amounts non-fibrous materials work. Such materials can be absorbed in an amount not exceeding 10 56 the total weight of the product, incorporated to one

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Variety of special product-technical advantages, such as «Ferb®,

Surface properties and the like, su trsl »l <nu! To tesa» · small amounts of distributed materials, such as Pigmest «, fett®, K« tßlX osyde, synthetic® organic © Polyüsrisstfcaysej sya $ to®t ± Be & @ elastomers and the like susetssn. If gewttneoiit ', the inorganic additive® .. "Fibridea ¹¹ " i & vsrlsibts

Make another desired A.usfü&r&ng@for&& @ T "ket & a & ixng is having an elastomeric Bindsmitt ©! Crafted Dis ent" tehenden products have a unique% m & überraeohend® combination of low Voluminous! Did high flexibility ira & high strength, where they !. lisohen in their phyeik & equity * transactions tissues are equivalent a auegeseiohä @ t @ 8 product of this type is aue mite & sstsns 25 percent of a # @l »© tOffier © n ^M fibrid." - = Bin'iemitt'als (hereunder is © in "FibriS ^ -Ein & er« us sinern eynthe-tischen elastomeric polymerizate with a between about 0.002 and 0.9 g / όβα see below) Eus @ 18ffi @ R alt. At least 50 wt. % Of a spontaneously expandable fiber _s E © If any organic synthetic fiber is produced, has elastomer® "Fibrid" © iriea EXastisitSmodtal 0.1; the best products contain a © lastomer® © with an elasticity module between 0.005 and 0 _and 05

When a compression is performed _"t erh8lten a material strength can also simultaneously & s material

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»Press it into a sample or give it an embossing to get the Uia to improve vision »to modify the surface behavior or other known modifications. If the pressing takes place between sieves, self-extinguishing) are subject Fibers of a stretch assuming a dreidiraen-. ! ionaXen shape on the surface of the fabric, as the fibers file in let Siebzwisohsiriräuiae penetrate.

tie binders for the purposes of the invention can be of a any synthetic organic polymeric material formed

: et that have an elastic modulus between about 0.002 and 25 g / den

did. In general, a polymer resin binder should

Medium with a modulus of elasticity of more than 0.9 g / dect with a

iindsinittelmenge less ale about 25 #, based on the toff 'total weight, work to keep us substances welch® ie properties of tissues ü <su same weight and Feserehalte have β ο If © be arwendet in © 3indeiaitteliasnge of more than $ 25 one should work with an elastomeric binding in order to obtain good pfeyslkaj.ic properties.

3 exemplary for elastomer binding ©! this class are the erechiedenen butadiene-styrene-Miiäclipolymerisate, the 30 to. 3 $> bound butadiene containing _t and also Terpolymerisat® 3Ώ. Butadiene, styrene and acrylonitrile. To other valuable ones

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elastomeric binders include kioofc and which contain a major proportion of poly (methyl methaorylate) and smaller amounts of other aorylates and aoryl acid; about 10 parts of a mixture of 08 $ Polymetl ^ lfflethaorylat susüglieh 2 fS Slyciaylfflethaerylat and about 33 ropes of the above-mentioned Aerylatester-KisGhpQlyf &erieates; a ferpolishate containing methylaorylate, methylsiethacilate and aorylaicure; a Kisöhpolymerleat von Äthylao ^ ylat with 2 ^ aoryl acid ·; a mixture of 49 parts Polyke ^ lmet ^ aerylat, '. 49 ü? Eileni Polyäthylaorylat and 2 ropes B © lya @ s ^ lsäw © _e made by LSsimgspolyaeri "sati ©» iii'BeBSol iant @ 3? Use dead Bensol peroxide as initiator; and Poly-Cäthyl © ® / $ s> 0pylett! With _®in®s © econtains 3 fS bioumyl peroxides An amd © ^ ® ^ valuable elaet ^ iieres binder is obtained ^ w @ mi .nan P & ly -> (tet7 @ as9thylsnäther) -glycol with a molecular weight T © m mngefilg ¹ 1000 ait foluylen-2,4-diisooyamst un% ®w BiläuB§ © imts? ti ^ fe © lendgnspp © n exhibiting macro ^ wis'ohen ^ a ^ binäung umsatsit and the last banished by ¥ ®reiniguBg sit H @thylen »liis- ( 4'-ph®Äyl-iaooyanat) with the formation of an isocyanate end group on U'eisemdan ₉ low molecular weight polymerizate * This low molecular weight polymer is then further reacted with hydrasin ^ around a high molecular weight © lastomeres Polpaeriss zn green (v®rgl « ^: Patentsransösische ' 1 172 566). ■ '■ ■ ".

Exemplary of non-elastomeric binders for the purposes

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dtr invention and polyamides, like Polyoaproaaid, copolymers of Polyfcexaattfc ^ leaadipaaiid and polyeaproaicl (preferably with a content of the components from 80:20) »Poly-5-Bethoxy-h ^ xaaethylenadipaffiid and the like. Exemplary polyesters that are suitable for all binders, ■ in polyethylene terephthalate, polyethylene isophthalate, copolymers of polyethylene terephthalate and polyethylene isophthalate (preferably with a content of the components in the ratio 80 to 20), poly (hexahydro-p-xylylene-terephthalate), etc. Particularly valuable urethanes are the urethanes, which are obtained by reacting piperazine and ethylene bisohlorforaiat, and the polyurethanes made from hexaethylene diaain and ethylene-bis-ohlorformt.et, etc.

The best for the purposes of: ä: * finding are fibers with a bending stiffness that is proportional to the product of the smoothness module ( _K ) of _the fiber and the one-half power of the thread denier. For the purposes of the invention, the product S xd ^{v / should be} between 1 and 1000 ttnd, preferably 5 and 230 .

The following examples serve to further explain the Invention »XlIe explained bonded fiber nonwovens have the structural properties and physical properties of the products according to the invention.

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An aqueous dispersion of a Blaetomer ^ erpolymerisatea, the 92% ethyl acetate, β # methyl aerylate wl 2 # acrylic acid contains CBhopi © s B ° 15) V with a Feetelsffgeiielt _: t-on 46 5 $

in partying ©? ⁹ W © is @ in ^:

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t @ s BipSiett ^ lolfffeipss® fflit an epoxy

& 1 f @ il Helanän on 4 Mi % f®tl @ 'I @ MaXdehyd ent-Ii d «r B @ hm mafi Iiäs -Goaneny)» and 5

visrd near the -fs @ l @ ia i © r S @ & ®ratiefällung

in © ist® !!! © © ©! ⁵ i © 2p.Bauart Wariagg iss », © in® f ^ ige solution of

33 mixer

operated at full @@ ® speed fibrids are produced in the f-om'der

Subject of the "bslgigofoen Bat ent- 556 145 are in the following

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Does it know spontaneously expandable "Tastra" ns Polyäthyleatertphtfcalat still hides? "The spontaneous expansion is checked by • immersing in a dismounted thread pile 5 down into a waiter of 90 °. Duron this treatment increases the length of the pad at the 9th 5 tons original length «. The thread material has a module of about 20% and has been cut with the help of staple fibers.

In the prepared btsobritbtntu weist, a slurry of 5 filaments produced in this way "spontaneously expandable staple fibers (length 6.4 am, (piter 5 den)) and 2 ropes of the above" described slastoaerfibrideu are produced in 10,000 ropes of water and a sheet is deposited " The sheet is removed from the sieve, dried, then a cotton cloth and a sieve with a mason opening of 1.68 mm are brought and "dried at 120 °" for 5 minutes. The dried sheet is then sieved with a mason opening of 0.30 am and then embossed and bound at 205 ° and 14 kg / cm ^2. B is further hardened by exposure to air at 165 ° for 5 minutes, and then washed and dried before the test. The fabric contains 40 pounds of elastoneres Binder that has a SlastisitXtsaodul of 0.01 g / denier before curing and 0.015 after curing · The tensile strength is 31.1 g / om // g / m ² , the square meter is 119 g, the drape stiffness 1.9 cm and the Hasef est ity 23.7 g / cm // g / m. On microscopic examination shows

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,, that the single oil fibers are curled up and spanked, 3.6 to 31.5 curls / oin and a free fiber length equal to the ^ ^: about 1.6 times the distance between adjacent parts of the binding. /

sisen »The fabric retains its strength in good condition when exposed to dry cleaning solvents. The abrasive treatment results in © inen.Stoff, which looks like a rford, has an excellent degree of whiteness, the Weieerad retains well and has a medium porosity and a good riff.

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3 © ine wässrig® suspension τοή selbstauedahnbaren Fasera _e le beiis immersion in boiling We.sse? sin® spontsns expansion 3a 10 $> QTg®hBu, subsrsitet, indöii isan 10 000 style © Waeser with Stapelfsser (Stapslläng® i * _f 4 Wt ₉ Psd®ntitsr 3 den) ®us self-expandable Folyest ^ s ^ fadsngut united »Si © grüad · = I 'with its Sjfogen solution a »surface activeii litttls-. -. " ^5! Alkanol HC", sin ümsetsuisgsprööiikt ®us © is used in © m fatty alcohol (ethylon oxide) «. Di® ma * Fagereuspengioa becomes - a--. = ■■ · -sufficient amount - of an ElastoiBerfl>} 3'iden-> AufeohlMaaaung ₉ harg®- «elles from a butadii & n-styrene-slastomerea / ('ratio .d @r ^ mponentsn 45: 55) suggests that 2.0 parts of the gsmisshten Fibri-3n in suspension form are celteav Since butadiene «styrene-» El & - «oaier® has a Blaefci & itUtsi & odtil of 0.008 g / äesi. This barrel @ r «Bi% £ @! Ikit is then put into the head container © iia®r leaf form

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poured, whereupon a sheet is deposited on a 20.3 ζ SO.5 whether the largest sieve bit sieve openings of 0 »15 am (39t4 meshes / cos 1552 meshes / cm ^{2) under suction.} The excess water is squeezed from the leaf by placing it on a 0.15 mm sieve, absorbent cloths and rolling it with a steel roller pen. The leaf is then removed from the sieve and the 0.30 mm Sieves (19.7 Kfes / cm or 388 loops / cm) brought, which are in turn brought from cellulose cardboard and placed in a press 10 Kin. dries at 150 ° and 6.7 kg / cm pressure Siebee, who were in contact with him while he was eating, has a tissue texture. Si © free floor length is about the Sineish half-compartment® (is mean one and a half times the Afcetandes length of a talk about binding points), the Sräueeletärk © @ about 23? 6 Kräus @ l / cm and dl® Stoffdicht® 0 _t 4 g / cm-'c The structure is tested for its physical properties; sau has a tensile strength of 16.4 g / cm // g / m ² and a tear strength of 15.5 g / m ² . The drape stiffness is 20.8 ma. If you wash these goods in a synthetic detergent, yours will decrease

Strength to: The tensile strength is 27.8 g / cm // g / m

and the tear strength 15 * 5 pounds per g / m. The drape stiffness decreases slightly to 18.3 mm.

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ίβηη one after {the same Ar & aitfwiTO ai & eteXle -dee ? ibriä @ n% indemittel8 "hard" .Fibrids «as BimiOTi'ttsX let j wird®, 'auegeseiöhnete. Fabric © with <§im @ a. @ © & slt -a »

20 f§ Xthyl @ mter®phthalat) uma 92.5 $ i © ^ fibers get game 1

BJi i 8, ρ ,, - ΐ ,,,, β '| „. ?

Poly «· (hexaaethylenaäipajaid) with

4-1 becomes through. a §9 "lioeh-SpinndtLee (foohAwetOMa ·«. * '0 _t spun, whereby the spinneret 14 g SolyBerieat / & n · a The thread material is fed directly to an elüktrlseh g © lmd®n®n ymraaatt- echen nozzle , which is arranged about 20.3 around the center of the dune area and is operated in a Psreek toh ^ «81 3cg / © a .. This bus © leads d; ae Paäengpat under gl @ lofes® £» tiger V © rfein © tion ₉ orientation IMD AbsoWeckung vorw & pts wää ee redirected to a flat Aufnahmciplatte · SI® moves "rird _$ ^ m.

building a layer of equal M @ k ©. m-'wlaxihtHi · - ^v

Deodorant during and after impact. Fadengatee'.on the "Aufnata® organ take on ül & WMqu © ine starkf) iräuselung (mindeetems -23" Krauael / cm). The threads are accelerated while they are being lifted up and down ₈ through

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as

and Polyo * p ¥ o * Mio (ratio 80 s 20) order · ». Se »Yli ·· is la the educated? Ora then stfitoäett swei Si ·!» · {Si «opening 0.50 gm) g * braeÄt and 1 1/2 Mim. pressed at 175 ° and -552 kf / ee ^2.

The obtained nonwoven fabric is soft, drapable? " Cloth-like and not paper-like * On the Grand des Prägteffnfeteti d «r Siefe · he has the Auee« h «n of a Breit« ewebea, The ohimieehe Anülyie results in a content of the binder component & to 7on 3 »9 £ · Dae square meter is 105 g» the seventh approx. 0 _r 2S g / oa, the drapierefifeicait C, 5 oa _v the tensile strength 73 g / o »// g / m and the ratio τοη tensile strength ta drape stiffness approx. i _t 37 kg / eat ² ·

A similar β fläohenhaftosi structure "contains 3.6 | 6 nbriden * binder, 45 8 @ k, at 3" 5 kg / oa ^{2 is} pressed ₉ whereby a non-woven fabric with a stiffness of 1.5 oat is given to other soft Drapable nonwovens are produced in similar tests with a binary content of 4 to 25 pounds. Further structures are produced by impregnating with a dispersion of an elastomeric barisee. All of these fiber nonwovens have their share in the mentioned desired physical properties

You samples 1 to 7 of the TaVsIiQ Z are not prone to a Yergleioh

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woven fabrics mean dta? Brfindu & i ®li 3 »rfeusalieli« n tissue »,«. The fibrous nonwovens® of the samples 3 and 4 are laid out ₉ ittdta mau ₌ with thorough stirring 5 part® Stftpelftiuitro in the presence of a small amount of alcohol as a Hetsaittel old 80G0 rope water ramieobt · The so-formed “fiber suspension becomes an aqueous” build-up «T & t _s the 2 parts of the mentioned fibrids» eiitälilt, -! Fan gieeet dä® @ © e 3ut in the pot of a BiLattfem unä e @ h @ i £ ®t on a 20.3 x 20 ₈ 3 cm © in leaf ^ tt ab «You remove the Siel) Kit den abga».

@, m © S ^ i ⁹ ? © rm, lipimgf se swieohen and w, ils '' - with dln @ ü

mu ®nti @ ra @ Bo B @ © Blatt ^ i ^ ii @ mn @ wä! 3 @ h @ n Seven 10 min. 150® and 3 ₉ 5 t§ / & T g ^ trooicaeto 11® Si @ l @ grant

resulting fa @@ rfii © ait @ ff @ ia® Ifiastenang ₀ <ä & © an öeweb®

itolieh is * ... - ... ·. · ^: ... ■ -. '

VaaerrliesetQff .der Irö ^ ® 5 Is im.Unulehe ?. Way like that

Fibrous nonwovens from samples 3 or 4, but in the absence of elastomers Ib, ®rg® provided ■ Bss sheet is then graded ^{with an aqueous version of "Bhö ^ Lex B ~ 15 B and}

the bdsaMeli® sheet denaofe 10 Hin · b @ i 130 ° and 3 »5 kg / cm

In d®y'.Table it follows that ® Kttvseeiel & en are used s

9Q984T / 1178

A » Self-stretchable folyeaterfagar dee examples 2 (B ■» 10}

Bt fibers, made from »elastomer *, serpolyaerisat, containing 92 9 »atfaar laorylate, 6 3§ methyl acetyl aorylate, and 2% aoryleic acid, formed by Soher precipitation and coagulation (5% 077)

Sl self-stretchable Polyaaiöfaeem (Poly-ip-sylyle

pt Sa · uaetomere is sugeeetst ale Dieptreion in water (in the ^{Torah marketed as 11} BhOpIeX B-15 "of the Roha and Haas Co.),

Hb non-woven fiber product (66-Vylon), that's one «Ynthetleohen polyaerisate binder is bound.

BADOR.G.NAL 9 0 9841/1176

vo m gg webon with Faa ^ rlieeatoffen according to the invention

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Fabric type

Mek «ä. Density, tensile strength, SM , s / oisjy speed

'Bauwöll'

12S

50 ^ A '' ■ ^v ■. ' 40 <fo B

Non-woven fabric, fibrid-bound; 60 % C
40 pounds B.

G; 40 $> '"Bhoplex B-15» resin dispersion (D)

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Non-woven fabric 119 0.0? 6 fabric, fiber

Non-woven fabric 122 0.036, harsb 6 ^

271 O _; 0865 O _; 37 18.4,

0 ₉ 40 29.0

0.035 0.42 22.1

0.41 35.2

Drapery Free Ratio Fibers Equipped with tensile strength, em ser strength. se-ISn = / brawn,
pier- krau-

0.59 65.8 2.3

1 = 6

3.68

3.1?

1.9 1 »4X 1.Θ2

1.9 1.25X 1.38

2.0 1.7X 2.11

see before s wool fabric

Typical wool fabric

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BATH ORIGINAL

909841/1176

B ^ i 9 ρ, ί © 1 4

By means of a ^ O-äooli-Spi & iiäüee (jüoohduarelaa © ®®®! »0.13 aa), threads of Polyäthyl®ntOT®fi | tfe®lat are spun sohmels at 10 g / min, with Si® Spiramtsalmik naoh fig« 1 & ®v modification applies that the bus © "i © hi is loaded" The frisehgesponnensn threads w @ r $ ®m much more. Iffie? A chromium (XlI) oxide rod leads ₉ around the self-sufficient selection of the © to generate charge on the threads * Using an air & üs®, we ^ en di® thread, refined and pre-filled and a Sa ^ si © lT © iP3fi®iitiing supplied, wherein a statistically random deposit of the filaments trfolgto Man srhält a nielitgebundene8 ₉ nlöht woven fabric having a Quadratmetergewielit of 17 g "the arrangement of the laäungseinführimden Bertihrungsetäbe" the Spinngeeehwindigkeit and Dtiaeagasohwindiglceit give a Fadensobioiit that in the below-described treatment on C? approximately the shrinkage of the single threads together with the crimping of the threads is subject to an areal shrinkage. The treatment is carried out according to the bslgisehan Faten & eeitrift 566 145 »

The fleece of non-bonded threads is consolidated "by brings it between wire screens and presses with 7 * 0 feg / ea at 50 ° The thread layer is then removed from the sieves "with water wetted, which contains a synthetic curing agent, and on a ulaafasstoff applied, which with Poiytetrafluoräthylenhars is covered. One submits the FadenaoMoht for 10 seconds to the

909841/1178

'· - ■ · ■ ■

- 50 - -

IFD-1

Action of steam at atmospheric pressure, whereby a thread eye trunk and thread curling occurs, which leads to a surface reduction of the layer τοη 75 £

The pre-shrunk structure is then made using a aqueous dispersion of the Serpolymerisat-Harsaaterials according to Example t tied. The bar impregnation of the thread structure results in a bonded flea-like structure. Kit with a binder content of 40 wt Subjected to heat treatment in order to cause the elongation of the threads and at the same time the resin bond and the crosslinking eu End su lead. This is where the structure is between 0.30 ° mm-wire- = brought sieves and heated in a press for 1 min. at 210 ° and 14.1 kg / cm. After this treatment, the structure becomes one Oven cured for 5 min. At 175 ° and then washed and dried.

The nonwoven fabric obtained is a soft * drapable6 material that has a pleasant feel and a texture similar to a fabric made of the same material. Bie polyester fibers have a crimp of 31.5 or more crimps / cm, and the free fiber length being about 1 ₉ 6fstehe. The elasticity modulus of the binder is 0.015 g / den. The polyester threads have a module τοη about 20 g / den, and the liter of these threads is about 1.4 ä®n · bar fabric has a square meter weight of 108 g / m ² , a tensile strength of 39.5 g / om

909841/1176 BATH ORIGINAL

.// g / a ² »« a continuation strength of W ₉ I g 4® g / s? ₉ »la © density of 0.57 g / efil» a Drapleretalfi ^ elt'of 1 * 8- as well as a ratio of tensile strength '. of 2 ", 45 feg / cm _β

In a similar fabric, the inflatable fabric is made into a polyamide fabric with the threads! mm 80 i »Mby lenisophthalat and 20 ^ Ätiiylente ^ eplitliaiat spun.

, f., Λ.

A non-woven fiber layer * which is produced as in Figure 1 and contains 95.3 # polyhexamethylene adipamide fibers and 4 »7 # threads of a micpolymerisates from 6 ~ Hylon and 66-liylon (ratio 80 ζω. 20) and ± n square meters g of 475 and a Dick® of 0.89 mm he.t ₉ is impregnated with a solution of PoIymerisates to as Faeem on in-Anständen points to tie and heftig® .Festigkeit and £ "& sismen- th & ng su © rt @ il @ n _e See Polymerisat is produced ₉ by adding sin Poly-Ct ^ tramethyl ^ nathsr) - ^! ^ ©! under Biliumg

converted - and 'Si © the latter * by union. * with methylene «=

"bis- (4 = phenyl) In ®in isocyanate - have" of, nitderasilAularee polymer überfuhrt "Bas polymer then umgesetait with -Hjärastn to -a high molecular ©©.

909841/1178

BATH ORIGINAL

ÄPD-t

Eletomer ~ polymer can be obtained (Tergl · FranksSisohe patent specification. 1 172 $ 66). This synthetic elastomer is dissolved in dimethylformamide to form a solution containing a pesticide bond τοη 15? T · The Rylon fiber layer is impregnated from this solution by being soaked in the solution with adequate absorption of the binding agent. Excess binder is removed · by passing the impregnated structure by Abqueteobwalsen "and the formations then immediately» tauoht in a water bath to the polymer su coagulate · Mmethylformamld ₉ which is fully miscible with water, leaches out of the formation by continuous Sintauohung in the Eoaguliertank »Which contains water in a volume that is significantly larger than the amount of dimethylformamide to be removed from the structure.

For all gowns that fix the binding agent to the non-woven substrate, coagulation is preferred to solvent evaporation, since, on the other hand, a high degree of porosity is obtained with the largely impermeable film that is provided by the XtSungsi & lttelabdasipung.

The coagulated and leached substrate is in the "flaccid" Condition dried at about 100 °. The product is soft and drapable. Bs is then buffed around with sandpaper

909841/1176

HED-I

to achieve a Yelouroher surface. Dae product is soft and drapisrbar and asked a velor surface texture, making it röoke verifiable ale garment fabric for children * and Daaen, etc. suitable for jackets. In order to produce a porous, leather-like material that is suitable for upper parts of soles, a coating is applied according to USA latent 3 100 721 (issued March 13, 1963). The coated fabric is dried at around 100 °? then dyed dark brown and dried again. In the Oberfiäeli · d @ s dyed fabric is a leathery @ f * learning imprinted "i ^ the nan, the material 10 minutes" on vor®rhltzt nut ä & nn '--iner a communique type having flat Had 5 sec. At 70 ° UNAE 49.2 kg / cm ² embosses.

90984 1/1176

^{BATHROOM 0R5GINAL}

Claims (6)

M e u e patent claims 1 «Non-woven fabric for clothing purposes made of crimped synthetic organic fibers or threads that are placed at the intersection«! The fibers or threads are bonded to one another at points by means of a synthetic organic polymer agent, which is present in amounts of 5 - 50 %, based on the weight of the nonwoven fabric, and has a modulus of elasticity (E) between 0.002 and 25 g / denier and in those Sets that the equation Binder {%) X ° This is characterized in that a) the fibers or threads have at least 11.8 crimps / cra, b) the average free path of the fibers or threads between binding points is at least 1.25 times the average straight distance between these binding points, o) the thickness of the nonwoven fabric is between approximately 0.28 and 0.7 g / om ⁵ , d) the ratio of the tensile strength ο strength to drape stiffness is greater than O> 84 kg / cm , and e) the drape stiffness of the nonwoven fabric is less than about 2.5 cm. 2. Nonwoven fabric according to claim!, Characterized in that the crimped fibers or threads are spontaneously expandable. BAD ORIGINAL -35- 909841 / T 176 and consist of a polycondensate » 3. Nonwoven fabric according to claim 1 or 2, characterized in that that the binder is an elastomeric polymer. 4. Nonwoven fabric according to θ ir.em of claim © 1 - 3 »characterized in that the lasers or threads made of polyamides,
like polyhexamethylene adipamide, 5. Non-woven fabric mach eir.em of claims 1-3 »characterized ? that the lasers or threads made of polyesters, like 6. Nonwoven according to ei.E © ® Sea? iinsprfieli @ I «=>" S ₉ dstarsii g @ «=> ketinaeichtiet« that the identifying agent is either © in the fibrid or a synthetic polymer made from «? in @ m fibrid. BATH ORIGINAL 909841/1176