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Microfiber-composite nonwoven materials

A technology of ultra-fine fiber and composite materials, which is applied in the direction of textiles and papermaking, layered products, non-woven fabrics, etc., and can solve problems such as high splitting, grammage, and large use

Active Publication Date: 2022-06-21
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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  • Microfiber-composite nonwoven materials
  • Microfiber-composite nonwoven materials
  • Microfiber-composite nonwoven materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0136] figure 1 and 2 The results of the thermal tensile testing of Example 1 in the machine and transverse directions are shown, along with the specific modulus values ​​at 180°C and at 40 and 60 g / m 2 Direct comparison based on conventional monolayers in the weight range.

[0137] image 3 The sound absorption coefficient / impedance of Example 1 compared to the monolayer used in Example 1 is shown. The particular combination of split fibers and meltblown fibers has also been shown to be unexpectedly advantageous, especially in terms of sound absorption. In the microfiber-composite nonwoven material SM according to the present invention, an unexpected synergistic effect of split fibers and meltblown fibers is shown when sound absorption is considered. Here, the sound absorption coefficients of the layer composites SM produced by the hydraulic fluid treatment are well above the level expected by simply combining the raw materials or evaluating the air permeability resistan...

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Abstract

The invention relates to a microfiber-composite nonwoven material comprising: at least one layer S comprising a first fiber component and at least one layer M comprising a second fiber component, wherein the second fiber component is at least partially Penetrating in the layer S, wherein the fibers of the first fiber component are composite filaments that are melt-spun and laid into a fiber web, the composite filaments are at least partially split into base filaments with an average titer of less than 1 dtex and are reinforced, Wherein the fibers of the second fiber component are meltblown fibers.

Description

[0001] Field of Invention [0002] The present invention relates to ultrafine fiber-composite nonwoven materials. The invention also relates to the manufacture of such composite nonwoven materials and their use. Background technique [0003] Nonwoven materials are advantageous for many applications. A nonwoven material is a composition composed of fibers of any type and origin of finite length, infinitely fine (filament) or cut yarn Patchwork, fiber webs, nonwovens, fiber layers, fiber fleece (Faserflor) assembled in any way and connected to each other in any way; which does not include: crossing or entanglement of yarns, such as in weaving, knitting , knitting, lace making, braiding 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. [0004] The main parameter of a nonwoven material is its pore size distribution. Here, nonwoven materials with suitable por...

Claims

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Application Information

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Patent Type & Authority Patents(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