CZ210292A3 - High-module integrated textile - Google Patents

Abstract

High modulus integrated nonwoven fabric total the basis weight of 150 - 1000 g.m2 consists of cross-stitched clad webs made of synthetic fibers with a cut length 38 - 150 mm, fineness 0.15 - 1.7 tex, strength 0.28 N / tex a ductility of 40-80%, which is on the web side of the web fabric or knit made of inorganic or natural fibers by 80-400 punches / cm 2 and the resulting fibrous the structure is fixed with hot air 180 - 210 ° C, impregnated heat-crosslinking dispersion in an amount of 5 - 30% wt. and polymerized at 120-190 ° C.

Description

High modulus integrated fabric

Technical field

The invention relates to a high modulus integrated fabric made of staple fibers and a glass fabric or knitted fabric interconnected.

BACKGROUND OF THE INVENTION

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At present, several basic types of non-woven fabrics for technical purposes are produced in the world. Of synthetic staple fibers, of synthetic or glass filament fibers by spunbond and spunbond techniques. Non-woven fabrics of synthetic staple or filament fibers exhibit high ductility but relatively low initial modulus and especially low dimensional stability at higher temperatures. On the other hand, non-woven glass fiber fabrics have an initial modulus and dimensional stability is sufficient, but a considerable disadvantage that reduces their application range is low ductility up to 3%. The web formed under the nozzle on the substrate matrix has sufficient dimensional stability and ductility properties. However, a dedicated production line is needed for its production.

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SUMMARY OF THE INVENTION

The staple fibers can be used in combination with glass tannins or knitted fabrics to produce an integrated fabric that combines the properties of both components - high initial modulus, toughness and sufficient ductility. The basis of the highly-woven integrated fabric with a total basis weight of 150-1000 gm ”is a non-woven staple fiber fabric with a shear length of 38,150 mm, a fineness of 0.15-1.7 tex, an average relative strength of 0.28 N / tex and an average ductility of 40-80 % needle reinforced. A glass fabric or knitted fabric with a basis weight of 20 - 250 gm ² is ironed on this web by the web.

The resulting composite is fixed under stress at 150 - 210 ° C for less than 60 seconds. This is followed by the application of a chemical binder in an amount of 5-20% by weight, which is screened in an oven at a temperature of 140-20 ° C for 200,600 seconds.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

70% of a modified pubester fiber having a fineness of 0.36 tex and a shear length of 65 mm, a tensile strength of 0.1% in N / tex and an elongation of 55% are blended onto the blending fiber components of a continuous production line for the production of a fused, chemically bonded nonwoven fabric. The remaining 30 wt. it forms an unmodified fiber with a fineness of 0.44 tex and a cut length of 85 mm and a strength of 0.40 N / tex and a tension of 73%. The web formed from this fiber mixture is pre-consolidated in two; Into the third needling machine, along with this non-woven fabric, a glass fabric having a basis weight of 40 g.m is introduced and ironed 90 strokes / cm from 2 sides of the nonwoven fabric. This is followed by a live fixation at 200 ° C for 55 seconds. A 12 wt.% Acrylic binder is applied to the fibrous formation thus formed. to the total weight of the web. After thermal crosslinking of the binder, the fabric is wound back. An in-2 fabric of 200 g.m has the following characteristics:

High modulus Nonwoven bonded PES integr. Fabrics Cross-fiber fabrics

Strength at 2% elongation N / 5 cm longitudinal direction 890 175 Strength at 2% elongation N / 5 cm transverse direction 520 75 Breaking strength N / 5 cm longitudinal direction 580 570 Breaking strength N / 5 cm transverse direction 430 460 Dimensional stability according to DIN 18 192% - 0 + 4 / -7 Oust bed mm 0,974 1.09 Elongation at break% along 22 ' 26 Elongation at break% across 24 32

Example 2

A polyester fiber having a fineness of 0.4 tx by a shear length of 85 mm, a strength of 0.45 N / tx and a latency of 79% is blended on the blending fiber components, a continuous manufacturing plant for the production of a cellular, chemically bonded nonwoven fabric.

The web formed from this fiber is pre-consolidated in two needle punches of 170 punctures / cm. Into the third needling machine, a glass fabric having a basis weight of 105 g.m is introduced at the same time as this non-woven fabric and spiked 90 strokes / cm on the nonwoven side. This is followed by a fixation under voltage at 21 ° C for 55 seconds. An acrylic binder in an amount of 8 wt. to the total weight of the web. After the thermal crosslinking binder, the fabric is wound into rolls. The integrated fabric weighing 260 g.m. ”achieves the following characteristics:

High modulus integrated fabric

Nonwoven bonded PES staple fiber fabric

Strength at 2 µl elongation N / 5 cm longitudinal direction 1 650 190 Strength at 2 µl elongation N / 5 cm transverse direction 700 110 Tear strength N / 5 cm longitudinal direction 720 763 Tear strength N / 5 cm transverse direction 610 524 The elongation at break breaks the longitudinal direction 26 28 The elongation at break breaks the transverse direction 28 33 Dimensional stability according to DIN 18 192 i 0 + 3 / -6 Thickness mm 1, 02 1,23

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PrúmvsΙοvá usability

The high modulus integrated fabric is fabricated on a continuous production line for the production of nonwoven fabrics of staple fibers by carding, cross-stitching, needling, fixation and binder deposition. The final fabric according to the invention can be used in the production of asphalt roofing sheets with a weight of 3000-6000 gm whose properties meet the requirements for laying of bridge structures, flat roofs, roof gardens and other applications where the highest demands on strength, flexibility and resistance to weather conditions. The fabric is suitable as a matrix for the application of epoxy resins. Due to the properties of the material, large-area products such as swimming pools, tanks, cisterns and the like can be produced by laminating.

Claims (1)

In most fashion, integrated • non-woven · fabrics are worn by eelkuva flat hinol. ι 1 '> □ 1000 lj.iii 'characterized in that a woven, cross-stitched web of synthetic fibers with a cut length of 58 - 150 mm. fineness 0.1b ~ 1.7 tex strength 0.28 N / tex, ductility 40 - 80% is ironed on the web side to the fabric or knitted fabric of inorganic or natural fibers number 2 80 - 400 punctures / cm and the resulting fibrous formation is fixed by hot air l 180 - 210 ° C, impregnated with a heat-dispersing dispersion in an amount of 5 - 30 ° C and polymerized at a temperature of 120 - 190 ° C.