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Integrated nonwoven laminated material

A laminate, non-woven technology, used in textiles, textiles and paper, fabrics, etc.

Inactive Publication Date: 2004-01-28
KIMBERLY-CLARK WORLDWIDE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In response to the stated difficulties and problems of the prior art, an integrated nonwoven laminate suitable for use as a filter was invented

Method used

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  • Integrated nonwoven laminated material
  • Integrated nonwoven laminated material
  • Integrated nonwoven laminated material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] Eight small pocket filters (24" x 24" x 22") were fabricated using 5.0 ounces per square yard (osy) of integrated nonwoven laminate containing low-loft dual A layer of melt blown microfibers between the spunbond layer and the high loft bicomponent spunbond layer. The integrated nonwoven laminate has an approximate 0.034 g / cm 3 and has the following components:

[0086] The low loft bicomponent spunbond layer comprised polypropylene / polyethylene uncrimped bicomponent fibers having an average diameter of about 17 microns in a side-by-side configuration. The low loft bicomponent spunbond layer comprised 36% by weight of the integrated nonwoven laminate.

[0087] The microfiber layer comprised meltblown polypropylene monofilament fibers having an average diameter of about 2.0 microns. The microfiber layer comprised 8.6% by weight of the integrated nonwoven laminate.

[0088] The high loft bicomponent spunbond layer comprised polypropylene / polyethylene crimped bicomponent...

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Abstract

An integrated nonwoven laminate material suitable for use as a filter medium having a microfiber layer integrated with a low loft multicomponent spunbond layer and a high loft multicomponent spunbond layer and a method of producing the integrated nonwoven laminate material. In one embodiment of this invention, a laminate material is through-air bonded to form an integrated nonwoven laminate material which is then electret treated to enhance attraction between particles being filtered and the fibers of the integrated nonwoven laminate material. In one embodiment of this invention, the integrated nonwoven laminate material is used as a filter having an ASHRAE Standard 52.1-1992 Dust Spot Efficiency of about 40 % to about 95 % and an ASHRAE Standard 52.2-1999 MERV (Minimum Efficiency Reporting Value) of 12 to 16.

Description

Background technique [0001] Filter media with large interfibrous pores and thus high permeability typically contain sparsely arranged coarser fibers. This filter media requires only relatively low actuation pressure to provide adequate filtration throughput and lifetime. However, high permeability filter media, such as residential fiberglass heating, ventilation and air conditioning (HVAC) filters, suffer from poor filtration efficiencies due to the media's macrofibrous pore structure that does not have an interstitial structure suitable for trapping fine contaminant particles. Thus, coarse-fiber, highly permeable filter media have not been used in fine particle filtration. [0002] In contrast, microfiber nonwoven webs, such as meltblown webs, have been used as fine particle filtration media. The closely packed fine fibers of these webs have an interfibrillar pore structure that is well suited for mechanically trapping or sieving fine particles. However, the microporous st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01D39/20B32B5/26D04H5/08D04H13/00
CPCB01D39/1623Y10T442/625D04H13/002Y10T442/668Y10T442/626Y10T442/68Y10T442/622Y10T442/681Y10T428/24992D04H13/007Y10T442/66Y10T442/62D04H5/08Y10T442/614Y10T442/641Y10T442/64B01D39/2017B32B5/26D04H1/559D04H3/018D04H3/147
Inventor B·D·阿诺M·L·格罗斯
Owner KIMBERLY-CLARK WORLDWIDE INC