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MICROFIBRE NON-WOVEN composite

A technology of ultra-fine fiber and composite material, applied in textiles and papermaking, non-woven fabrics, layered products, etc., can solve the problems of large use, gram weight, high splitting degree, etc., and achieve the effect of large thickness and low modulus

Active Publication Date: 2019-01-15
CARL FREUDENBERG KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although microfiber nonwovens have pore size distributions suitable for different applications and combine extremely well functions, technically, their manufacturing methods, especially in terms of producing regular and uniform pore size distributions, are relatively expensive and often resulting in the use of large grammes
However, as the grammage increases, it becomes increasingly difficult to achieve the high degree of splitting required for microfiber properties

Method used

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  • MICROFIBRE NON-WOVEN composite
  • MICROFIBRE NON-WOVEN composite
  • MICROFIBRE NON-WOVEN composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0135] figure 1 and 2 Shown are the results of the hot tensile tests of Example 1 in the longitudinal and transverse directions, and the specific modulus values ​​at 180°C versus those at 40 and 60 g / m 2 A direct comparison based on conventional monoply by weight range.

[0136] image 3 The sound absorption coefficient / impedance of Example 1 compared to the single layer used in Example 1 is shown. It turns out that the specific combination of split fibers and meltblown fibers is also unexpectedly advantageous especially with regard to sound absorption. In the microfiber-composite nonwoven material SM according to the invention, a surprising synergistic effect of split fibers and meltblown fibers is shown with regard to sound absorption. Here, the sound absorption coefficient of the layer composite SM produced by hydraulic fluid treatment is much higher above the frequency range than would be expected by simply combining the raw materials or by evaluating the air resistan...

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PUM

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Abstract

The invention relates to a microfiber nonwoven composite, which includes: at least one layer S that contains a first fiber component; and at least one layer M that contains a second fiber component. The second fiber component is forced at least in part into the layer S. Fibers of the first fiber component comprise melt-spun filaments laid into a fiber web which are at least partially split and solidified to form elementary filaments having an average titer of less than 1 dtex. Fibers of the second fiber component include melt-blown fibers.

Description

field of invention [0001] The present invention relates to superfine fiber-composite nonwoven material. The invention also relates to the manufacture and use of such composite nonwoven materials. Background technique [0002] Nonwoven materials are advantageous for many applications. A nonwoven material is a composition of fibers of any type and of any origin, infinitely fine (filament) or cut yarns of finite length, Assembled sheets, webs, non-woven materials, fiber layers, fiber piles (Faserflor) in any manner and connected to each other in any manner; this does not include: crossing or entanglement of yarns, e.g. in weaving, knitting , knitting, lace making, weaving and making tufted products. Nonwoven materials can be produced in different types and ways, for example by means of mechanical, aerodynamic and / or hydrodynamic methods. [0003] The main parameter of a nonwoven material is its pore size distribution. Here, nonwovens with a suitable pore size distribution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H5/03
CPCD04H5/03D04H1/43838D04H1/43835D04H1/541B32B5/022B32B5/26D04H1/46D04H1/492D04H1/498D04H3/016D04H3/11D04H1/559
Inventor P·拉什P·弗兰克C·施耐德
Owner CARL FREUDENBERG KG