Title: Method of making biaxially oriented nonwoven fabrics

Abstract: A nonwoven fabric having alternating stripes of high fiber density and low fiber density is made in such a manner that the high fiber density stripes run across the fabric and maximize the cross direction strength to a point that the cross direction/machine direction strength ratio approaches unity. This advantageous and desirable characteristic can be achieved by hydroforming card web; first disposing the carded web on a relatively fine mesh screen and placing a finger-like striping bars over the web with the axis of the bars at 90.degree. to the card web's general fiber orientation. Water was then sprayed over the assembly with sufficient force to rearrange the fibers in the web thereby producing the nonwoven fabric of this invention.

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Inventors: Marshall, Preston F. (Walpole, MA, US)

Application Number: 877282
Filing Date: 1978-02-13
Publication_date: 1980-10-14
Assignee: The Kendall Company (Boston, MA)
Primary Class(es): 264/557 28/105, 264/119, 264/128, 264/505, 264/518, 264/570
Other Classes:
US Patent Ref:

2862251	Dec, 1958	Kalwaites	264/119.
3059313	Oct, 1962	Harmon	264/119.
3088859	May, 1963	Smith	264/128.
3110609	Nov, 1963	Bletzinger	264/128.
3816231	Jun, 1974	Marshall	19/145.
3917785	Nov, 1975	Kalimites	264/128.

Other Refs:
Primary Examiner: Lowe, James B.
Assistant Examiner:
Attorney: Scahill, Jr.; Edward J.