Composite nonwoven fibrous webs and methods of making and using the same

A technology of non-woven fibers and non-woven fabrics, which is applied in the field of low-density composite non-woven fiber sheets, can solve the problems of little compressive strength and compactness, pollution, cost increase, etc., and achieve the effect of superior absorption properties

Inactive Publication Date: 2011-01-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the use of such surface modifiers can cause complications when the nonwoven article is used as an absorbent wipe or filter medium.
Some of these complications include leaching of surface modifiers over time, the tendency of surface modifiers to contaminate other surfaces or pass through the gas

Method used

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  • Composite nonwoven fibrous webs and methods of making and using the same
  • Composite nonwoven fibrous webs and methods of making and using the same
  • Composite nonwoven fibrous webs and methods of making and using the same

Examples

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Example Embodiment

[0190] example

[0191] Exemplary embodiments of the present invention have been described above, and the present invention is further illustrated below by the following examples, which should not be construed in any way to limit the scope of the invention. On the contrary, it should be clearly understood that various other embodiments, modifications, and their equivalents may be employed, without departing from the spirit of the invention and / or the scope of the appended claims after reading the description herein by those skilled in the art. These other embodiments, modifications and equivalents thereof will be apparent from the scope of the invention. Furthermore, notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values ​​set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contain certain errors necessarily resulting from ...

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Abstract

The disclosure relates to composite nonwoven fibrous webs including a population of sub-micrometer fibers having a median diameter less than one micrometer ([mu]m), and a population of microfibers having a median diameter of at least 1 [mu]m. At least, one of the fiber populations is oriented, and each composite nonwoven fibrous web has a thickness and exhibits a Solidity of less than 10%. The disclosure also relates to methods of making composite nonwoven fibrous webs, and articles including composite nonwoven fibrous webs made according to the methods. In exemplary applications, the articles may be used as gas filtration articles, liquid filtration articles, sound absorption articles, surface cleaning articles, cellular growth support articles, drug delivery articles, personal hygiene articles, or wound dressing articles.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 017,230, filed December 28, 2007, the disclosure of which is incorporated herein by reference in its entirety. technical field [0003] This invention relates to composite nonwoven fibrous webs and methods of making and using such webs. The present invention also relates to low density composite nonwoven fibrous webs comprising blends of submicron fibers and microfibers useful in making absorbent articles. Background technique [0004] Nonwoven webs have been used to make absorbent articles that can be used, for example, as absorbent wipes for surface cleaning, gas and liquid absorbents or filter media, and barrier materials for sound absorption. In some applications where high absorbency is required, it may be advantageous to use a highly porous nonwoven article prepared from fine submicron fibers having a high surface area. However, fine s...

Claims

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Application Information

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IPC IPC(8): D04H1/42D04H13/00
CPCD04H1/4382D04H13/007D04H1/42B32B5/26B32B5/14B32B27/02D04H13/002A61P17/02B32B5/022B32B5/024B32B5/026B32B5/06B32B5/08B32B5/245B32B7/12B32B27/12B32B29/02B32B2262/0215B32B2262/0223B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/0292B32B2262/14B32B2307/102B32B2307/726B32B2535/00B32B2555/00D04H1/559D04H1/56D04H1/43825D04H1/43835D04H1/43838Y10T442/2738Y10T442/614Y10T442/626Y10T442/68Y10T442/681
Inventor 埃里克·M·摩尔迈克尔·R·贝里甘
Owner 3M INNOVATIVE PROPERTIES CO
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