DD281837A5 - TEXTILE FLAKE WITH REACTIVE RESIN - Google Patents

Abstract

The invention relates to textile surfaces with reactive resin, which consist of fibers of a modulus of elasticity of 200 to 2,500 daN / mm 2 and before hardening have a ductility in the longitudinal direction of more than 10%. The reactive resin-coated or impregnated textile fabrics can be used as construction materials, in particular as support compounds in medicine or for technical devices. reactive resin-coated; Laengsrichtung, stretchable; Construction materials; Stuetzverbaende; Medicine; Devices, technical}

Description

The invention relates to construction materials, in particular for medical support associations or technical devices which, in addition to a transverse elasticity, have a longitudinal elasticity, a process for their production and their use.

The construction materials according to the invention generally consist of a carrier layer which is coated and / or impregnated with a reactive resin.

In general, the structural materials of the invention may be used for stiffening, shaping and sealing in the medical or technical field.

However, the construction materials according to the invention may also be used for the production of containers, filters, pipes, for connecting construction elements, for the production of decorative or artistic articles, for stiffening purposes or as filling or sealing material for joints and cavities.

Characteristic of the known state the technology

Construction materials consisting of a flexible support coated with a water-hardening reactive resin

stratified or soaked ι are already known. For example, DE-A 23 57 931, in which construction materials of flexible supports, such as knitted fabrics, fabrics or nonwovens, are described which are coated or impregnated with water-curing reactive resins, such as isocyanates or isocyanate-modified prepolymers. In order to increase the strength of these construction materials, support materials made of glass fibers were used (US 45 02 479). However, these known support materials are stretchable only in the transverse direction, but in the longitudinal direction, virtually rigid, so as to achieve a higher stability (US 45 02 479, column 3, lines 45 to 47).

A disadvantage of the transversely stretchable support materials is the occurrence of wrinkles in the attachment of the material on a non-uniform surface with conical elevations or variable radii, z. B. a human leg.

In the US 46 09 578 materials called Raschel and Trikotgewirke of glass fibers are called as a carrier for constructions, which are processed in a specific mode of action. These carriers have, in addition to the transverse strain, a longitudinal elongation of at least 22 to 25 % . The longitudinal elongation is given in these knitted fabrics due to a certain Legart in the stitch formation and the high restoring forces of the glass fibers (modulus of elasticity 7000 to 9000 (daN / mm ² )).

Structural materials based on glass fibers, as described in US 46 09 578, have the disadvantage of poor X-ray transparency. Also, they form on the

Fractures sharp edges that cause injury. Another disadvantage is the occurrence of glass dust in the production and removal of the construction material.

Construction materials such as described in US 46 09 578 can not be made with fibers other than glass fibers. Other fibers than glass fibers have much lower moduli of elasticity, so that one does not receive carriers with comparable longitudinal and transverse strain.

Object of the invention

The present invention provides textile fabrics having improved performance properties.

Compared with the known bandages made of glass fibers, the inventive fabrics have superior strength, the advantage of a lighter weight. In addition, they do not form sharp edges, burn residue-free and do not form glass dust when removed with a saw and during processing. A particular advantage is the increased X-ray transparency. In contrast to bandages made of glass fibers, the fabrics according to the invention do not break even with strong deformation.

The fabrics according to the invention can be used particularly preferably for support bandages in the medical and veterinary field. They have an excellent fitting comfort, which is reflected in

that both human and animal extremities in difficult areas such as knees, elbows or heels can be wrapped wrinkle-free.

The same applies to other areas of application in which one can wrap parts that are bent or bent, wrinkle-free.

Explanation of the essence of the invention

The present invention has for its object to provide textile fabrics with improved performance characteristics available.

It has been found that textile fabrics which are impregnated and / or coated with a water-hardening reactive resin, characterized in that they consist of organic fibers having a modulus of elasticity of 200 to 2500 daN / mm and prior to curing, an extensibility in Längsr direction of more than 10 % .

Surprisingly, the fabrics according to the invention also have a longitudinal direction in addition to an elongation in the transverse direction.

The longitudinal direction usually means the preprocessing direction of the textile, so for example in the direction of the chain or the mesh rods.

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Transversal direction usually means perpendicular to the processing and direction of the textile, ie in the direction of weft or course «

The fabrics of the invention may be in various geometric shapes. Preferably, they are in tape form, with the long side of the tape corresponding to the processing direction of the fabric.

Organic fibers for the fabrics according to the invention may be natural fibers or chemical fibers "15

As natural fibers are particularly fibers of plant hair "such as cotton bast fibers, such as hemp and jute and hard fibers" such as sisal, called "particularly preferred are cotton fibers" 20

Fibers made of synthetic polymers are particularly cited as chemical fibers. "For example, polymer fibers such as polyethylene, polypropylene, polychloride (e.g., polyvinyl chloride and polyvinylidene) may be used.

25 chloride), polyacrylic and vinylate fibers,

Polycondensate fibers, such as polyamide, polyester and Polyharnstoffaeern. and Polyaddition fibers, such as spandex or elastane fibers,

called,

It is also possible to use viscose fibers «

It is also possible to use elastic threads (rubber thread) «35

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Preferred synthetic fibers are fibers of polyesters "5" polyamides and polyacrylonitriles,

It is of course also possible to use fabrics made of different fibers.

Particular preference is given to fabrics of polyester and / or polyamide and / or cotton fibers «

The fibers for the fabrics of the invention are known to eich (synthetic fibers, pages 3 to 10 and to 221 (1981), Verlag Chemie, Wainheim).

The thread system, which is preferably incorporated in the longitudinal direction, permits the elastic elongation in the longitudinal direction after a shrinking process. In the case of using filaments of natural fibers, twisted yarns of staple fiber yarns with a twist coefficient oc between 120 and 600 are preferred, so that the high twisting gives a large torsional moment and thus a tendency to curl. The rotation

25 coefficient α is calculated according to

oc =

1000

where T is the number of turns per m of yarn or twine and TEX is the longer-term yarn mass in g per 1000 m of yarn. To make an unwanted rotation of the textlien

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To avoid flatness, it is preferred to use the filaments with alternating directions of rotation (clockwise: S-rotation, counter-clockwise: Z-rotation) in alternating sequence, e.g. one thread S-I thread Z or 2 threads S - 2 threads Z, incorporated.

IQ threads of natural rubber (elastodiene) as well as synthetic polyurethane elastomere threads (elastane) can be used as the last elastic threads.

As man-made fibers, polyfile textured filament yarns of polyester, polyamide, etc. are used to achieve the elongation at length.

The elastic properties of these yarns are based on the permeability obtained during the texturing process.

" Rippling and twisting of the filaments achieved by the thermoplastic properties of the materials All types of texturing filaments can be used, such as HE yarns (high elastic crimp yarns), set yarns, HB yarns (high bulk yarns) .

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The longitudinally integrated thread system is zusammengehal 'by connecting threads. in which both staple fiber yarns or yarns of natural fibers and staple fiber yarns or polyfile filament yarns (plain yarn) made of chemical fibers can be used. The strength of these yarns is characterized by the modulus of elasticity (Ε-modulus),

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The fibers for the inventive surfaces have a modulus of elasticity (modulus of elasticity) in the longitudinal direction of from 200 to 2000, preferably from 400 to 200 ° ₁ daN / now ^2. The modulus of elasticity can be determined by methods known per se (synthetic fibers, Pages 63 to 68 (1981), published by Chemio Weinheim). 10

The toxtile fabrics according to the invention generally have a extensibility in the longitudinal direction of more than 10, preferably from 15 to 200, particularly preferably from 15 to 80, before the curing of the reactive resin. The elongation in the longitudinal direction is understood to mean the change in length compared with the fully relaxed flat structure , which is achieved when the textile fabric is loaded with 10 N in the longitudinal direction per cm width. Such measurements can be, for example

20 to DIN 61 632 (April 1985) are performed.

The sheetings according to the invention generally have, prior to curing of the reactive resin, an extensibility in the transverse direction of from 20 to 300 ×, preferably from 40 to 200 ×.

The textile fabrics according to the invention generally have a weight per square meter of from 40 to 300 g, preferably from 100 to 200 g.

According to the invention, particularly textile fabrics made of fibers of synthetic polymers are preferred. In the case of using vegetable fibers, mixed fabrics are preferred, using a fiber of a synthetic polymer in the longitudinal direction and a plant fiber in the transverse direction.

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Textiles of fibers of synthetic polymers or mixed textiles of synthetic polymers in the longitudinal direction and vegetable fibers in the transverse direction, the elongation of which has been set by a shrinkage process, are preferred as the fabric according to the invention

The shrinking process b after activation of the textile fabric or yarns contained therein "wherein the activation of e.g. can be achieved by the following methods: 15

a) thermal treatment with hot air in Temperaturbe · ranging from 80 to 250 ⁰ C,

b) thermal treatment with steam or superheated steam in the temperature range 100 -

20 180 ⁰ C,

c) Wet treatment of the fabric using suitable liquid media, e.g. Water, alcohol optionally in the presence of adjuvants (e.g., surfactants).

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Particularly preferred herein are fabrics having longitudinally polyphilic textured filament yarns of manmade fibers such as polyester, polyamide, polyacrylonitrile fibers which have been thermally shrunk and which are transversely of natural fibers or manmade fibers having a modulus of elasticity of 400 to 2000 daN / mm ² from fibers of high-tenacity polyethylene terephthalates having a modulus of elasticity of 900 to 2000 daN / mm ² .

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The processing forms of the textile fabrics according to the invention can be woven, knitted or crocheted fabrics or nonwovens. Preference is given to knitted fabrics such as warp knit fabrics, Raschel knits and knitted knit fabrics. Especially preferred are Raschel knitwear «

Water-curable reactive resins are preferably polyurethaned or polyvinyl-resin-based resins,

All water-hardening polyurethanes come in accordance with the invention all organic polyisocyanates known per se

Question, that is, any compounds or mixtures of

Compounds containing at least two organically bound isocyanate groups per molecule. These include both low molecular weight polyisocyanates having a molecular weight below 400 and modifying products of such low molecular weight polyisocyanates having a functionality which can be calculated from the functionality and content of functional groups, e.g. From 400 to 10,000, preferably from 600 to 8,000, and in particular from 800 to 5,000, by weight of molecular weight. Suitable low molecular weight polyisocyanates are, for example, those of the formula

Q (NCO) _n , 30

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in the 5th

η = 2 to 4, preferably 2 to 3, and

Q is an aliphatic hydrocarbon radical having 2 to 18, preferably 6 to 10 C atoms, a cycloaliphatic hydrocarbon radical having 4 to 15, preferably 5 to 10 C atoms, an aromatic hydrocarbon radical having 6 to

15 15, preferably 6 to 13 C atoms,

or an araliphatic hydrocarbon radical having 8 to 15, preferably 8 to 13 C atoms,

mean. 20

Suitable such low molecular weight polyisocyanates are e.g. Hexamethylene diisocyanate, 1,12-dodecane diisocyanate, cyclobutane-1,3-diisocyanate, cyclohexane-1,3- and 1,4-diisocyanate and any desired mixtures of these isomers,

25 l isocyanato-SjSiS-trimethyl-S-isocyanatomethyl

cyclohexane, 2,4- and 2,6-hexahydrotoluylene diisocyanate and any mixtures of these isomers, hexahydro-I, 3- and / or -1,4-phenylene diisocyanate, perhydro-2,4'- and / or -4,4'- Diphenylmethane diisocyanate, 1,3- and 1,4-phenylene diisocyanate, 2,4- and 2,6-toluene diisocyanate and any mixtures of these isomers, diphenylmethane-2,4 ¹ - and / or -4,4'-diisocyanate, naphthylene -1,5-diisocyanate, triphenylmethane-4,4 ', 4 "-triisocyanat or polyphenyl-polymethylenpolyisocyanate, as by

35 Aniline-formaldehyde condensation and subsequent phosgenation can be obtained.

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Suitable relatively high molecular weight polyisocyanates are modification products of such simple polyisocyanates, ie polyisocyanates with Z ₄ B, isocyanurate, carbodiimides, allophanate, biuret or uretdione structural units, as are known per se from prior art processes from the simple polyisocyanates of the above-mentioned Among the higher molecular weight, modified polyisocyanates are particularly known from polyurethane chemistry prepolymers having terminal isocyanate groups in the molecular weight range 400 to 10,000, preferably 600 to 8,000 and in particular 800 to 5,000, of interest, These compounds are in a conventional manner by reacting excess amounts of simple polyisocyanates of the type exemplified with organic compounds having at least two isocyanate-reactive groups, in particular organic polyhydroxy compounds Suitable such polyhydroxy compounds are both simple polyhydric alcohols such as ethylene glycol, trimethylolpropane, 1,2-propanediol or 1,2-butanediol, but in particular higher molecular weight polyether polyols and / or polyester polyols known in polyurethane chemistry with molecular weights of 600 to 8,000, preferably 800 to 4,000, the at least two, in the

30 Rule 2 to 8, but preferably 2 to 4 primary

Of course, it is also possible to use those NCO prepolymers which, for example, consist of low molecular weight polyisocyanates of the type mentioned by way of example and less preferred compounds with respect to isocyanate groups

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reactive groups such as polythioether polyols, hydroxyl-containing polyacetals, polyhydroxypolycarbonates, hydroxyl-containing polyesteramides or hydroxyl-containing copolymers of olefinically unsaturated compounds have been obtained. "Suitable compounds for preparing the NCO prepolymers with isocyanate-reactive groups" in particular hydroxyl groups "are, for example, those described in US Pat 218 543, column 7, line 29 to column 9, line 25 exemplified compounds. In the preparation of NCO prepolymers, these compounds are reacted with isocyanate-reactive groups with simple polyisocyanates of the type exemplified above while maintaining an NCO / OH equivalent ratio of> 1. The NCO prepolymers in general-mean an NCO content of 2.5 to 30, preferably 6 to 25 wt -.% To. From this it is already apparent that in the context of the present invention "NCO prepolymers" or "prepolymers with terminal isocyanate groups" both the reaction products as such and their mixtures with excess amounts of unreacted starting polyisocyanates, which are often referred to as "semiprepolymer" to understand.

Particularly preferred polyisocyanate components according to the invention are the technical polyisocyanates customary in polyurethane chemistry, i. Hexamethylene diisocyanate, l-l6ocyanato-3,3,5-trimethyl-5-iBocyanatomethyl-cyclohexane (isophorone diisocyanate, abbreviated: IPDI), 4,4'-diisocyanato-dicyclohexylmethane, 4,4'-diisocyanatodiphenylmethane, its mixtures with the corresponding

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2 «4'- and 2« 2 ' isomers »Polyisocyanate of the diphenylmethane series as they can be obtained by phosgenation of aniline / formaldehyde Kondenr.aten in a conventional manner« the biuret or isocyanurate groups having modification of these technical polyisocyanates and in particular NCO -Prepolymere of the type mentioned on the basis of these technical rule polyisocyanates on the one hand and the exemplified simple polyols and / or polyether polyols and / or polyester polyols on the other hand, as well as any mixtures of such polyisocyanates. Isocyanates mitaromatically bound NCO groups are preferred according to the invention. A polyisocyanate component which is particularly preferred according to the invention comprises partially carbodiimidized diisocyanatodiphenylmethane which, as a result of addition of monomeric diisocyanate to the carbodiimide

20 structure also has uretonimine groups.

The water-curing polyurethanes may contain known catalysts. In particular, this tert. Amines be "that catalyze the isocyanate / water reaction and not a self-reaction (trimerization" allophanatization) (DE-A 23 57 931). As examples may be mentioned tert. amine-containing polyethers (DE-A 26 51 089) "low molecular weight tert. Amine «like

30 ^ C _n . / \ / 3

N NH N or dimorpholinediethyl ether HoC ^ 3

or bis (2,6-dimethylmorpholino) diethyl ether (WO 86/01397). The content of catalyst based on the tertiary nitrogen is generally from 0 to 0.5% by weight. based on the polymer resin,

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Water-hardening polyvinyl resins may be, for example, "vinyl compounds consisting of a hydrophilic prepolymer having more than one polymerizable vinyl group in which a solid" insoluble vinyl redox catalyst is incorporated, one component of which is encapsulated by a water-soluble or "water-permeable shell." Such a redox Catalyst is, for example, sodium hydrogen sulfite / copper (II) sulfate, in which, for example, the copper sulfate is encapsulated with poly-2-hydroxyethylmethyl acrylate «

15 polyvinyl resins are described for example in EP-A 01 36 021. Water-hardening polyurethanes are preferred «

The water-hardening plastic resins may contain per se known additives, e.g. Flow aids «Thixotropic agents« Defoamers and lubricants ·

Furthermore, the plastic resins may be colored or, if desired, contain UV stabilizers,

Examples of suitable additives are: polydimethylsiloxanes, Aerosil-type calcium silicates, polyethylene waxes, ionol-type UV stabilizers (DE-A 29 21 163), color pigments such as carbon black, iron oxides, titanium dioxide or phthalocyanines.

The additives which are particularly suitable for polyurethane prepolymers are described in the Kunststoff-Handbuch, Volume 7, Polyurethane, pages 100 to 109 (1983). you

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are generally added in an amount of 0.5 to 5% (based on the resin).

A process has also been found for the preparation of the textile fabrics according to the invention with a water-curing reactive resin which is characterized in that organic fibers having a modulus of elasticity in the

○ range from 200 to 2500 daN / mm produces the textile, a longitudinal extensibility of more than 10 % sets, then impregnated with the water-hardening plastic resin and / or coated.

The production of the textile, so the fabric or the knit, can be done in a conventional manner.

The adjustment of the extensibility in the longitudinal direction may preferably be done by a thermal shrinkage or a wet treatment. The performance of the thermal shrinkage is known per se and can be carried out either in the drying oven with hot air and in special ovens with superheated steam. The residence time of the material to be shrunk is generally 0.1 to 60 minutes, preferably 0.5 to 5 minutes, in the heated area.

The textile fabrics according to the invention, which are impregnated and / or coated with a water-curing plastic resin, are generally stored in the absence of moisture.

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embodiments

Example 1 (water-hardening plastic resins)

The textile support materials (Example 2) are coated with resins listed below.

Prepolymer I

100 Tie. of a technical polyphenyl polymethylene polyisocyanate, obtained by phosgenation of an aniline-formaldehyde condensate (η25 ° C = 200 mPa.s, NCO content ss 31%), (crude MDI) are mixed with 32.2 parts of propoxylated triethanolamine ( OH number = 150 mg KOH / g) to a prepolymer having 20.0 % NCO content and a viscosity of η25 ⁰ C = 20,000 mPa.s reacted. Catalyst, * content = 0.30 % tert. Amine nitrogen.

Prepolymer II

660.0 Tie. Bis- (4-isocyanatophenyl) -methane, which contains carbodiimidized portions (NCO content = 29 %) , with 3400 Tlen. propoxylated triethanolamine (OH number = 150 mg KOH / g) converted to a prepolymer. Furthermore, 1 part of a polydimethylsiloxane having a viscosity η25 ⁰ C of 11.24 mPa.s and 15 Tie are added. a commercial UV stabilizer (a Cyanalkylindolderivat). The prepolymer has after Abreaktion a viscosity 7J25 ⁰ C of 23,000 mPa.s and an isocyanate content of 13.5 % ·, it contains 0.45 % tert. Nitrogen.

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Prepolymer III 5

6.48 kg of isocyanate (bis (4-isocyanatophenyl) methane containing carbodiimidized fractions are initially introduced into a stirred tank, and then 7.8 g of a polydimethylsiloxane having η25 ° = 30,000 g / mol and 4.9 g of benzoyl chloride are introduced and then 1.93 kg of a polyether prepared by propoxylation of propylene glycol (OH number 112 mg KOH / g), 1.29 kg of a polyester prepared by propoxylation of glycerol (OH number 250 mg KOH / g) and 190 g Dimorpholinodiethylether added "after 50 minutes, the reaction temperature 45 reaches ⁰ C, after 1 hour, the temperature maximum of 48 ° C is reached, 500 g of a polydimethylsiloxane having η25 ° C = 100 mPa.s are added and stirred in. the viscosity of the final prepolymer η25 ° C 15,700

20 mPa.s, the isocyanate content 12.9 Y ,,

Prepolymer IV

100 tees. of a technical polyphenyl polymethylene polyisocyanate, obtained by phosgenation of an aniline-formaldehyde condensate (η25 ° 0ί 200 mPa.s; NCO content: 31 Y, (crude MDI) are treated with 32.2 Γηίΐβη ethoxylated triethanolamine (OH number = 149 mg KOH / g) to a prepolymer with 18.9 Y, NCO content and a viscosity of η25 ° 0: 28000 mPa.s implemented, catalyst content: 0.3 Y, tert. Amines nitrogen f.

Example 2 (support materials)

The characteristics of the textlien carrier material used are summarized in Table 1.

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Table 1 Textile support materials

Carrier composition * Width Length g / m ² Cross-stitched mesh Overall type IV. Cm Elongation V. Elongation Row bars Cb '/ · 10 cm 10 cm

8.6 37.5% 115 80 56 49

7.5 35.0% 155 68 54 44

7.6 13 V. 142 80 60 59 7.5 24 '/. 244 74 50 59 7.5 25 V. 193 70 50 59 7.5 25 '/. 230 48 50 59

7.7 53% 102 84 72 57, 7.9 18 * /. 172 60 55 57 ^ o 9.0 16% 170 45 50 59

7.9 26 * /. 79 74 53 58

11.0 62 * /. HS 90 51 49

10.8 47 * /. 140 64 58 78

7.5 19 '/. 291 66 56 51

7,5 0 64 310 35 60

*) Note: The exact characterization of the yarn types is shown in Table 2, All

Details refer to the raw material. ~ * "

A Pues-TEX / PES HF SJ Ln 27:73 LO B PES Tex / PES HF LO 45:55 C PES Tex / PES GL 59:41 D PES PES NS Tex / 38:62 e PES Tex / PES HF 49:51 F PES Tex / PES HF 42:58 G PES TEX / BW 51: 49 H PAI / PES MF 31: 69 I PES TEX / PES MF 1.9: 81 K PA2 / BW 46:54 L PES TEX / PES HF 31: 69 M PES Tex / PES ST 55:45 Vl (Ver glass fiber equal) (OS PS 46 09 578) V2 (Ver BW equal) (EP-PS 90 289)

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Table 2 Characterization of the yarn types

PES TEXSSPES-TEX:

PES HF:

PES GL!

PES NSiPES-MF:

PES ST:

ΡΛ l:

PA 2:

167 dtex, f 30 χ 2, polyfine textured polyester: * ilamant yarn HE yarn, K = 62 %)

167 dtex, f 30 χ 1, polyfilled textured polyester filament yarn (HE yarn, K = 60y.)

550 dtex, f 96 VZ 60, polyfile, high strength polyester / ilament yarn normal shrinking, E = 1650 daN / mm ² 167 dte,., F 32 χ 2, polyfile polyester filament yarn

830 dtex, f 200, polyfile, high tenacity polyester filament yarn, normal shrinking E = 1170 daN / mm ²

550 dtex, f 96, polyfile, high strength polyester filament yarn, low shrinkage, E = 980 daN / mm ²

45 tex χ 1, normal polyester spun yarn (staple fiber)

110 dtex, f 34 χ 2, polyfilled textured polyamide filament yarn (HE yarn, K = 61tt). 78 dtex, f 17 χ 2, polyfilled textured polyamide filament yarn (HE yarn, K = 66Y.),

K: Kennkräuselung (DIN 53 840) E: Young's modulus

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The support material is thermally shrunk to achieve an optimal elongation, for example, 5 minutes at HO ⁰ C with steam or 10 minutes at 135 ⁰ C with hot air in a drying oven. If necessary, to the actual processing step again at 110 ° to 190 ⁰ C dried to completely remove residues of moisture. The coating with the Präpoly mers I to IV takes place in a dry cabin, the relative humidity is characterized by a dew point of the water below -20 ⁰ C. Coating with resin is done by measuring the weight of the desired length of the knitted fabric tape (eg, 3 or 4 yards) and then calculating the amount of prepolymer required for sufficient bonding and applying it to the knit tape. This coating can be carried out by dissolving the prepolymer in a suitable inert solvent (for example, methylene chloride or acetone), soaking the knitted tape, and then removing the solvent in vacuo. Furthermore, however, the resin can also be applied via suitable roller impregnators or slit nozzles. Such impregnation devices are described, for example, in US Pat. No. 4,502,479 and US Pat. No. 4,427,002. The height of the resin content depends on the respective use rate. For use as synthetic support bandages is the

30 height of the resin content 35 to 65 X, while for

technical uses as insulation or sealing a complete impregnation of all mesh openings may be desired (order quantity of more than 65 %)

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(Application amount based on total weight) "The cut to length coated strips are then rolled up in the relaxed state and sealed in a water-vapor-impermeable film. To prepare the specimens listed in the examples below, the foil pouch is opened and the roll is immersed in water. Thereafter, the dripping wet roll is wound in one operation to the desired shaped body. The processing time of the inventively preferred polyurethane prepolymer is about 2 to 8 minutes. The elongation of the uncured coated tape is shown in Table 1.

Example 3 (comparative example )

3.66 m of the comparative material VI with a weight of 79.9 g are coated, rolled up and packaged with 51.1 g of prepolymer II in the manner indicated above.

Bei 25 p iel 4 (Comparative Example)

3.00 m of the reference material V2 with a weight of 14.4 g are coated, rolled up and packed with 22.3 g of prepolymer I in the manner indicated above, 30

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office

Examples 5 to 18

Analogous to 1 and 2, the following bands are produced and packaged

Eg carrier material length of the weight of the prepolymer weight of the

Bandes Bandes prepolymers

3.00 m 24.6 g II

3,00 m 35,7 g II

3,00 m 39,7 g II

3,00 m 56,0 g II

3,00 m 44,2 g II

3.00 m 52.0 g II

3,00 m 23,3 g I

3.66 m 47.2 g II

3.00 m 48.4 g II

3.00 m 15.6 τ I

3.66 m 32.6 g III

3.66 m 31.8 g IV

3.66 m 43.9 g III

3.66 ic 54.8 g III 82.2 g

OJ OJ 5 A 6 B 7 C 8th D 9 e 10 F 11 G 12 H 13 I 14 K 15 A 16 A 17 L 18 M

34.4 G 42.8 G 55.6 G 56.0 G 53.0 G 57.2 G 34.9 G 42.4 G 53.2 G 23.7 G 48.9 G 44.5 G 65.9 G

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^ Example 19

There are 6 test specimens wound, which have an inner diameter of 76 mm and consist of 10 layers, which are arranged flush on top of each other «To determine the

JQ breaking strength, the specimens are stored for 24 hours at 40 ⁰ C and then for 3 hours at 21 ⁰ C. They are then crushed between two plates in a radial direction (parallel to the cylinder axis) in a pressure-strain machine (type Zwick No. 1484) with maximum force F and the associated deformation distance being recorded (feed rate 50 mm / min) »

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Results: ^F Max ^CN] deformation Test specimen off [now] Example* 1300 15 3 377 18 4 840 60 12 833 50 11 1310 20 13 258 16 14

15 *) excess tape is discarded.

Example 20

There are 6 test specimens wound, which have an inner diameter of 45 mm and consist of 7 layers, which are arranged flush on top of each other · To determine the breaking strength they are deformed analogously to Example 19 in a compression-elongation machine to 20 X (9 mm) ,

25 The required force F is determined.

Results: Test specimen from Ex.

measured force F CN] at 20 % deformation

3 1050 4 180 7 1010 8th 960 9 900 10 1120 Le λ 25 334

2 B j 8 3

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Example 21

5 test specimens are wound "which now have an inner diameter of 76 and consist of 8 layers" which are arranged flush on top of each other. "In order to determine the fracture strength, they are deformed analogously to Example 19 in a pressure-elongation machine

both the force at 20 % and 50 % deformation was measured «

Results:

Test specimen from Measured Force F CN] Ex. At 20 K Deform. at 50 % deformation.

3,892,1052

4,185,264

5,236,447

6 404 587 12 370 770

Examples 19. 20 and 21 illustrate that longitudinally stretchable textile support materials consisting of high-strength polyester fibers with respect to the breaking strength of 2 g are at the level of the glass fiber ribbons, although they are advantageously in terms of weight about 1/2 to 1/3 and with respect to the Ε-module even about 1/7 lower.

Thus, stretchable textile backing materials are quite capable of replacing "longitudinally extendable glass fiber backing materials, since, in addition to their good breaking strength properties, they also have an equally good application behavior due to the elongation at length"

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28 \ 8 3

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but disadvantages such as poor X-ray transparency »

Sharp edge and the dangerous glass dust not exhibit.

Example 22

Analogously to Example 19, 2 test specimens are wound and the breaking strength is determined at 20 % and 50 × deformation,

Results: Test specimen from Measured Force F CN] Ex. At 20 Y, Deform, at 50 M Deform.

15 220 349

16 223 376 17 280 435

18 163 175 (broken)

The example shows that the breaking strength is independent of the type of resin (specimens from Ex. 15 and 16).

Furthermore, that high-strength polyfile polyester fibers are clearly superior to the normal polyester staple fibers (staple yarns) (specimens from Ex. 17 and 18).

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Le A 25 334

Claims (10)

Claims 5 1. Textile fabrics which are impregnated and / or coated with a water-hardening plastic resin characterized in that they consist of organic fibers with a modulus of elasticity from 200 to 2500 daN / mm ^z and before stretching have a longitudinal extensibility of more than 10% " 2. Textile fabrics according to claim 1, characterized in that they consist of fibers having a modulus of elasticity in the range of 400 to 2000 daN / mm ² . 3. A fabric according to claims 1 and 2, characterized in that it has a longitudinal extensibility of 15 to 200 '/ cm before curing. respectively. 4 «Textile fabrics according to claims 1 to 3, characterized in that they have a longitudinal extensibility of 15 to 80% before curing · 5. Textile fabric according to claims 1 to 4, characterized in that it has a stretchability in the transverse direction of 20 to 300 % . 6. A textile fabric according to claims 1 to 5, characterized in that it has a square 35 meter weight of 40 to 300 g. Le A 25 334 - 29 - 7. Textile fabric according to claim 1> characterized in that it consists of polyester and / or poly amide and / or cotton fibers « 8. textile fabric according to claims 1 to 7, characterized in that «is used as a water-curing plastic resin, a polyurethane or a polyvinyl resin« 9 "Process for the preparation of textile fabrics with a water-hardening reactive resin" characterized in that the textile is made of organic fibers with a modulus of elasticity in the range from 200 to 2500 daN / m ^2, the fabric is stretched lengthwise more than 10 Y , then with the water-hardening plastic 20 resin impregnated and / or coated. 10 «Process according to claim 9, characterized in that one adjusts the extensibility of the textile in the longitudinal direction by thermal shrinkage and / or wet shrinkage. 11 «Process according to claims 9 and 10, characterized in that one carries out the thermal shrinkage in the temperature range of 80 to 250 ° C« 30 12, Process according to claim 9, characterized in that one passes through a wet shrinkage by immersion and / or impregnation of the surface: in a liquid medium optionally in the presence of auxiliaries. Le A 25 334 -SO- IS. Use of textlien fabrics, which with a water-hardening plastic resin impregnated and / or coated, which consists of organic fibers with have a modulus of elasticity of 200 to 2500 daN / mm and prior to curing have a longitudinal extensibility, direction of more than 10 % , characterized in that they are used as a construction material. 14. Use according to claim 13, characterized in that they are used as orthopedic support bandages. 15. Use according to claim 13, characterized in that they are used as a molding material for technical devices. 16. Use according to claim 13, characterized in that they are used as insulating material.