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US6057256: Web of biocomponent blown fibers

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Filing Information

Inventor(s) Dennis L. Krueger · James F. Dyrud ·
Assignee(s) 3M Innovative Properties Company ·
Attorney/Agent(s) Roger R Tamte ·
Primary Examiner William Krynski ·
Assistant Examiner Gray; J. M. ·
Application Number US7135067
Filing date 12/18/1987
Issue date 05/02/2000
Predicted expiration date 10/11/2003
U.S. Classifications 442/400  · 428/373  ·
International Classifications D03D 300  ·
Kind CodeA
International Classifications 428373;374;229;224;280 ·
Related U.S. Application DataThis is a division of allowed application Ser. No. 911,394, filed Sep. 25, 1986, now U.S. Pat. No. 4,729,871, which itself was a continuation of application Ser. No. 704,537, filed Feb. 22, 1985, and application Ser. No. 540,543, filed Oct. 11, 1983, both now abandoned.
12 Claims, No Drawings


Abstract

Fibrous webs of bicomponent fibers are made by extruding a layered molten mass through a row of side-by-side orifices into a high-velocity gaseous stream. Bicomponent fibers of small size can be obtained, and the webs offer unique properties.

Independent Claims | See all claims (12)

  1. 1. A fibrous web comprising a coherent entangled mass of melt-blown fibers which individually comprise a first polymeric material extending longitudinally along the fiber through a first portion of the cross-sectional area of the fiber and a second polymeric material adhered to the first polymeric material and extending longitudinally along the fiber through a second portion of the cross-sectional area of the fiber, said fibers being prepared by extruding a layered molten mass of said first and second polymeric materials through a row of side-by-side orifices into a high-velocity gaseous stream, where the extruded streams are attenuated and drawn into a mass of entangled fibers having an essentially infinite aspect ratio, and the fibers are then collected as a web that coheres through the entangled nature of the fibers.
  2. 12.12. A fibrous web comprising a coherent mass of melt-blown fibers which average less than 10 micrometers in diameter and individually comprise a first polymeric material extending longitudinally along the fiber through a first portion of the cross-sectional area of the fiber and a second polymeric material different from the first polymeric material adhered to the first polymeric material and extending longitudinally along the fiber through a second portion of the cross-sectional area of the fiber, said fibers being prepared by extruding a layered molten mass of said first and second polymeric materials through a row of side-by-side orifices into a high-velocity gaseous stream, where the extruded streams are attenuated into fibers, carried to a collector, and collected as a mass of fibers that have an essentially infinite aspect ratio and are sufficiently entangled that it is impossible to remove one complete fiber from the mass and the mass is coherent without further treatment.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3016599 DU PONT Perry Jan 1962
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Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
GB932482Jul 1963

Other Publications

Yoshito Miura, "Key Points of Non-Woven Fabrics", published on March 15, 1981.
S.C.Yu, "Manufacturing Techniques of Non-Woven Fabrics", 1st Edition, Jan., 1978.
Encyclopedia of Polymer Sciences and Technology, Vol. 8, p. 221. 39-Textiles, Vol. 85, p. 71, 1976.
Wente, Van A., "Superfine Thermoplastic Fibers" in Industrial Engineering Chemistry, Vol. 48, p. 1342 et seq. (1956).
Report No. 4364 Naval Research Laboratories, May 25, 1954, "Manufacture of Superfine Organic Fibers" by Wente, V.A.; Boone, C.D.; and Fluharty, E.L. Buntin, Rober A. and Lohkamp, Dwight D., "Melt-Blown--A One Step Process For New Non-Woven Products", TAPPI, Vol. 56, No. 4, Apr., 1973.
Excerpt from Encyclopedia of Textiles, Fibers and Non-Woven Fabrics, 1984, John Wiley and Sons, Inc., pp. 252-284 (part.p. 273) on subject of "Non-Woven Textile Fabrics".

Referenced By

Document NumberAssigneeInventorsIssue/Pub Date
EP1352116 3M Innovative Properties Company THOMPSON, Delton R., Jr. et al. Feb 2006
US7320739 3M Innovative Properties Company Delton R. Thompson, Jr. et al. Jan 2008
US6565344 Nordson Corporation Rachelle Bentley et al. May 2003
US6824733 3M Innovative Properties Company Stanley C. Erickson et al. Nov 2004
US6667254 3M Innovative Properties Company Delton R. Thompson, Jr. et al. Dec 2003
US6709623 Kimberly-Clark Worldwide, Inc. Bryan David Haynes et al. Mar 2004
US6916752 3M Innovative Properties Company Michael R. Berrigan et al. Jul 2005
US6773531 E. I. du Pont de Nemours and Company Edgar N. Rudisill et al. Aug 2004
US6846450 3M Innovative Properties Company Stanley C. Erickson et al. Jan 2005
US6797655 E. I. du Pont de Nemours and Company Edgar N. Rudisill Sep 2004
US7591058 3M Innovative Properties Company Michael R. Berrigan et al. Sep 2009
US6861025 3M Innovative Properties Company Stanley C. Erickson et al. Mar 2005
US7503326 3M Innovative Properties Company Philip G. Martin Mar 2009
US6605248 E. I. du Pont de Nemours and Company Edgar N. Rudisill et al. Aug 2003
US6827764 3M Innovative Properties Company James E. Springett et al. Dec 2004
US7001555 Nordson Corporation Rachelle Bentley et al. Feb 2006
US7488441 Kimberly-Clark Worldwide, Inc. Bryan David Haynes et al. Feb 2009
US7591346 3M Innovative Properties Company Delton R. Thompson, Jr. et al. Sep 2009
US6814555 Nordson Corporation Martin A. Allen Nov 2004
US7279440 3M Innovative Properties Company Michael R. Berrigan et al. Oct 2007
US7638195 Hybrid Plastics, Inc. Joseph D. Lichtenhan et al. Dec 2009
US7690902 3M Innovative Properties Company Stanley C. Erickson et al. Apr 2010
US7695660 3M Innovative Properties Company Michael R. Berrigan et al. Apr 2010
US7723415 Hybrid Plastics, Inc. Joseph D. Lichtenhan et al. May 2010
US7989371 3M Innovative Properties Company Seyed A. Angadjivand et al. Aug 2011
US7989372 3M Innovative Properties Company Seyed A. Angadjivand et al. Aug 2011
US8021996 Kimberly-Clark Worldwide, Inc. Susan Kathleen Walser et al. Sep 2011
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