US 11,655,563 B2
Apparatus for making nonwoven from continuous filaments
Sebastian Sommer, Troisdorf (DE); Tobias Wagner, Cologne (DE); and Gerold Linke, Hennef (DE)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Mar. 26, 2021, as Appl. No. 17/213,873.
Application 17/213,873 is a continuation of application No. 15/493,170, filed on Apr. 21, 2017, abandoned.
Claims priority of application No. 16167804 (EP), filed on Apr. 29, 2016.
Prior Publication US 2021/0214858 A1, Jul. 15, 2021
Int. Cl. D01D 5/088 (2006.01); D04H 3/02 (2006.01); D04H 3/16 (2006.01); D01D 5/098 (2006.01); D01D 10/00 (2006.01); D04H 3/14 (2012.01); D04H 3/005 (2012.01)
CPC D01D 5/088 (2013.01) [D01D 5/0985 (2013.01); D01D 10/00 (2013.01); D04H 3/005 (2013.01); D04H 3/02 (2013.01); D04H 3/14 (2013.01); D04H 3/16 (2013.01); D10B 2401/041 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus for producing a nonwoven from continuous spun filaments, wherein at least one spinning device for spinning the filaments is provided, wherein the filaments are cooled and stretched, wherein a deposition device is provided for depositing the stretched filaments to form the nonwoven, wherein the deposition device is implemented in the form of a foraminous belt having a plurality of foraminous belt openings distributed over a foraminous belt surface, wherein the plurality of foraminous belt openings provide air flow through the foraminous belt, wherein at least one extraction fan is provided underneath the foraminous belt, wherein a portion of the foraminous belt openings are plugged with a sealing compound to create a partially plugged foraminous belt, wherein air permeability of an unplugged foraminous belt is between 300 cfm to 1100 cfm, wherein air permeability of the partially plugged foraminous belt is 150 cfm to 700 cfm, wherein the air permeability of the partially plugged foraminous belt is non-homogeneous, wherein a ratio of the air permeability of the unplugged foraminous belt to the air permeability of the partially plugged foraminous belt is 1.2 to 4, wherein the sealing compound is arranged in and underneath the foraminous belt and does not project upward past the foraminous belt, wherein the foraminous belt comprises a woven fabric comprising warp threads and weft threads delimiting the foraminous belt openings, and wherein the woven fabric of the foraminous belt has a weave density of about 20 to about 75 warp thread/25 mm and of about 10 to about 50 weft threads/25 mm.