Method of making biaxially oriented nonwoven fabrics

Details Method of making biaxially oriented nonwoven fabrics Method of making biaxially oriented nonwoven fabrics

1978-02-13

1980-10-14

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

191611, 264119, 264128, 264570, 264518, 264505, D04H 164, D01G 1584

Patent

active

042281237

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.

REFERENCES:
patent: 2862251 (1958-12-01), Kalwaites
patent: 3059313 (1962-10-01), Harmon
patent: 3088859 (1963-05-01), Smith
patent: 3110609 (1963-11-01), Bletzinger
patent: 3816231 (1974-06-01), Marshall
patent: 3917785 (1975-11-01), Kalimites

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