Verfahren und Vorrichtung zur Formung von nicht-gewebten Faserbahnen

• Main Authors: RUFFALO, MICHAEL A., NEWARK, NEW YORK 14513, US, WILDER, MICHAEL L., VICTOR, NEW YORK 14564, US, LILLY, GEORGE R., PALMYRA, NEW YORK 14522, US, HARDY, WILLIAM M., VICTOR, NEW YORK 14564, US
• Format: Patent
• Language: German
• Published: 01.12.1994
• Edition: 5
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING; SPINNING; TEXTILES; TRIMMINGS; WADDING

A web or mat producing unit including a fiber opening and doffing mechanism (52) mounted on a vertically adjustable platform (11) to direct fibers randomly downwardly through an opening (28) in the platform and onto the horizontal upper run of an endless screen (15), which travels in one direction over a vacuum or suction opening (24) positioned beneath and parallel to the upper run. Two, spaced side curtains or panels (31, 32), which are suspended from the underside of the platform, guide fibers into a predetermined space located between opposite sides of the upper run of the screen, thereby to form the fibers into a shingle-free nonwoven mat which may, if desired, be fed successively onto the upper run of the screen in the next successive unit in a series thereof. The width and configuration of the mat can be changed by adjusting the panels toward and away from each other, and by placing a removable template (26) or baffle (75) over the suction opening.