SK210292A3 - High-modulated integrating textile - Google Patents

Abstract

Highly modulated integrated staple fabric 20 synthetic fibers and glass fabric; or knitted fabric is fixed under tension, connected by needles and chemical bonding. Its relative strength at 2 . % elongation is at least 2.5 H / 5 cm / g and total ductility will not drop below 20% in any direction. total relative tear strength at all directions will not drop below 2.1 N / 5 cm / g, while dimensional dilatation shall not exceed in all directions at 200 ° C 0.5%.

Description

Technical field

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

BACKGROUND OF THE INVENTION

At present, several basic types of nonwovens for technical purposes are produced worldwide. Of synthetic staple fibers, of synthetic or glass filament yarns by spunbond and spunbond techniques. Non-woven fabrics of synthetic staple fibers exhibit high ductility, but relatively low initial flange fashion, and in particular low dimensional stability at higher temperatures. In contrast, non-woven glass fiber fabrics have an initial modulus and dimensional stability are sufficient, but a considerable disadvantage that reduces their range of application is low ductility up to 3%. The web formed under the nozzle on the support matrix has properties in terms of dimensional stability and ductility. However, specialized production lines for single-purpose use are required for its production.

SUMMARY OF THE INVENTION

It can be made from staple fibers in a suitable combination with glass tannins or knitted fabrics that combine the properties of both components - high initial modulus, toughness and sufficient ductility. The basis of the high-modulus integrated fabric with a total weight of 150-1000 g.m is a non-woven fabric of staple fibers of 38 150 mm, a fineness of 0.15 - 1.7 tex, an average relative strength of 0.28 N / tex and a fiber elongation of 40 - 80! A glass fabric or knitted fabric weighing 20 - 250 g.rn is stitched to this fleece web.

The resulting composite is fixed under stress at a temperature of 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 a drying oven at a temperature of 140-200 ° C for 200,600 seconds.

Examples of embodiments of the invention

Example 1

70% of a modified polyester fiber having a fineness of 0.36 tex and a shear length of 65 mm, a strength of 0.35 N / tex and an elongation of 55% is blended into a fiber blender of a continuous production line for the production of a needle, chemically bonded nonwoven fabric. The remaining 30 wt. 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 an elongation of 75%.

The web formed from this fiber mixture is pre-reinforced in two stages 2 of needles 170 punctures / cm. A glass fabric weighing 40 gm is introduced into the third needle machine together with the nonwoven fabric. and spun on the side of the nonwoven web 90 stitches / cm. This is followed by a stressed fixation at 200 ° C for 55 seconds. A 12 wt.% Acrylic binder is applied to the fibrous formation thus formed. to the total weight; Roure. After thermal crosslinking of the binder, the fabric is wound into rolls. The in-2 fabric of 200 g.m has the following characteristics:

High modulus Nonwoven bonded PES integr. fabrics staple fiber fabrics

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

Example 2

A polyester fiber having a fineness of 0.4 tex having a cut length of 83 mm, a strength of 0.45 N / tex and an elongation of 79% is blended into a fiber blender of a continuous production line for the production of a needle, chemically bonded nonwoven fabric.

The web formed from this fiber is pre-reinforced in two needle stages 170 punctures / cm. A glass fabric of 105 g / m < 2 > This is followed by an energizing at 210 ° C for 55 seconds. An acrylic binder in an amount of 8% m.p. to the total weight of the web. After thermal crosslinking of the binder, the fabric is wound into rolls. Integrated fabric -2 with a basis weight of 260 g.m achieves us.1 Editing properties:

High-tech integrated fabric

The nonwoven spun PES fabrics of staple fibers

Strength at 2? Elongation N / 5 cm longitudinal doe r 1 650 190 Strength at 2? Elongation N / 5 cm transverse direction 700 110 Tensile strength N / 5 cm longitudinal direction 720 743 Tear strength N / 5 cm transverse sine r 610 524 Elongation at break% longitudinal direction 26 20 Elongation at break θ transverse direction 20 33 Dimensional stability according to DIN 18 192 - 0 + 3 / -6 Thickness mm 1, 02 1.23

Prurnyslová exploitability

The high modulus integrated fabric is a continuous process line for the production of nonwoven staple fibers by carding, cross-stitching, needling, fixation and binder deposition. The final fabric according to the invention is useful in the production of asphalt roofing strips 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, elasticity and resistance to weathering conditions. The fabric is suitable as a matrix for the application of epoxy resins. Due to the properties of the material, large-scale products such as swimming pools, tanks, tanks and the like can be produced by laminating.

Claims (1)

High modulus integrated nonwoven fabric with a total basis weight of -2,, - 1000 g.m mark! characterized in that the softened, criss-embossed web of synthetic fibers with a length of 5Q - 150 min, a fineness of 0.15 - 1.7 tex of a strength of 0.20 N / tex, an elongation of 40 - 00, is ironed on the web by the web, or knitted of inorganic or natural fibers, of a number The resulting fibrous formation is fixed with hot air of 100-210 ° C, impregnated with a heat-sieving dispersion in an amount of 5-30% by weight and polymerized at a temperature of 120-190 ° C.