METHOD OF MAKING A DISPERSIBLE MOIST WIPE

• Main Authors: Joseph Kenneth BAKER, Kenneth John ZWICK, Nathan John VOGEL
• Format: Patent
• Language: English; Spanish
• Published: 08.09.2017
• 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; NON-WOVEN FABRICS; TEXTILES; TRIMMINGS; WADDING

A method for making a dispersible nonwoven sheet generally comprises dispersing natural fibers and regenerated fibers in a ratio of about 70 to about 90 percent by weight natural fibers and about 10 to about 30 percent by weight regenerated fibers in a liquid medium to form a liquid suspension. The liquid suspension is deposited over a foraminous forming wire to form a nonwoven tissue web. The nonwoven tissue web is sprayed with a first plurality of jets. Each jet of the first plurality of jets is spaced from an adjacent one of the first plurality of jets by a first distance. The nonwoven tissue web also is sprayed with a second plurality of jets. Each jet of the second plurality of jets is spaced from an adjacent one of the second plurality of jets by a second distance, and the second distance is less than the first distance. The nonwoven tissue web is dried to form the dispersible nonwoven sheet. Un método para fabricar una lámina no tejida dispersable comprende generalmente dispersar fibras naturales y fibras regeneradas en una relación de aproximadamente 70 a aproximadamente 90 por ciento en peso las fibras naturales y aproximadamente 10 a aproximadamente 30 por ciento en peso las fibras regeneradas en un medio líquido para formar una suspensión líquida. La suspensión líquida se deposita sobre un alambre de conformación porosa para formar una trama de papel tisú no tejida. La trama de papel tisú no tejida se atomiza con una pluralidad de chorros. Cada chorro de la primera pluralidad de chorros se separa de un chorro adyacente de la primera pluralidad de chorros por una primera distancia. La trama de papel tisú no tejida se atomiza además con una segunda pluralidad de chorros. Cada chorro de la segunda pluralidad de chorros se separa de un chorro adyacente de la segunda pluralidad de chorros por una segunda distancia, y la segunda distancia es menor que la primera distancia. La trama de papel tisú no tejida se seca para formar la lámina no tejida dispersable.