Method of producing a hydroentangled nonwoven material
A method of producing a nonwoven material by hydroentangling a fiber mixture containing spunlaid filaments, natural fibers and synthetic staple fibers, wherein a fibrous web of natural fibers and at least 10% by fiber weight of manmade staple fibers is wetlaid by means of an inclined wire formation, the wetlaid fibrous web is hydroentangled in a first hydroentangling station and spunlaid filaments are laid on top of said hydroentangled wetlaid fibrous web to form a combined web. The combined web is hydroentangled in a second hydroentangling station.
1. A method of producing a nonwoven material by hydroentangling a fiber mixture comprising spunlaid filaments, natural fibers and synthetic staple fibers, the method comprising
wetlaying a first fibrous web of natural fibers and at least 10% by fiber weight of manmade staple fibers by means of inclined wire formation,
hydroentangling said first fibrous web in a first hydroentangling station,
laying spunlaid filaments on top of said hydroentangled wetlaid fibrous web to form a combined web, and
hydroentangling said combined web in a second hydroentangling station, and
wherein the combined web is hydroentangled from the side of the wetlaid fibrous web in the second hydroentangling station.
2. The method as claimed in claim 1 , wherein a fluid pressure used in the first hydroentangling station is between 10 and 50 bars.
3. The method as claimed in claim 1 , wherein a fluid pressure used in the second hydroentangling station is between 70 and 200 bars.
4. The method as claimed in claim 1 , wherein said wetlaid fibrous web of natural fibers and manmade staple fibers contains between 10 and 40% by fiber weight staple fibers and between 60 and 90% by fiber weight natural fibers.
5. The method as claimed in claim 1 , wherein the natural fibers are wood pulp fibers.
6. The method as claimed in claim 1 , wherein the manmade staple fibers have a length between 3 and 25 mm.
7. The method as claimed in claim 1 , wherein there are no thermal bonding points between the spunlaid filaments.
8. The method as claimed in claim 1 , the method further comprising dewatering the hydroentangled wetlaid fibrous web to a dry content of between 30 and 50 weight % before laying spunlaid filaments on top of said hydroentangled wetlaid fibrous web.
9. A nonwoven material produced according to the method in claim 1 .