Title: Conversion of nonwoven fabric into staple fibers

Abstract: Nonwoven fabric is fed at a first rate into the bite between a first shredding element and a stationary working surface. The first shredding element has a plurality of projections which penetrate the fabric and at least substantially shred the fabric as the first shredding element is moved past the working surface at a second rate substantially greater than said first rate. The at least substantially shredded fabric then passes between the first shredding element and a second shredding element, the latter being driven at a third rate substantially different from said second rate to effect additional shredding and to separate the resulting staple fibers. A forced draft fan pulls air past the fabric as the fabric is being worked, to maintain the fabric temperature below the fusion temperature of the fibers.

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Inventors: Platt, Louis (Seneca, SC, US)

Application Number: 475203
Filing Date: 1974-05-31
Publication_date: 1976-03-02
Assignee: Phillips Petroleum Company (Bartlesville, OK)
Primary Class(es): 425/83.1 19/83, 19/96, 19/303, 19/306, 28/111, 28/112, 425/82.1
Other Classes:
US Patent Ref:

8634	Jan, 1852	Kellog	19/96.
1425920	Aug, 1922	Osten	19/83.
2824610	Feb, 1968	Schubert et al.	19/161.

Other Refs: 647,779995,2811,113,025

Aug, 1964	BE
Jun, 1965	UK
May, 1968	UK

Primary Examiner: Newton, Dorsey
Assistant Examiner:
Attorney: