Method of forming a fiber web for use in absorbent products, and fiber web produced according to the method
First Claim
1. A method of forming a web of fibres intended for use in absorbent products by air-laying fibres, wherein separate air flows containing fibres are fed to a number n of different mat-forming wheels, wherein a separate web layer is formed on each mat-forming wheel, wherein an intended fibre web is formed by virtue of said web layers being combined downstream of the mat-forming wheels to form a common fibre web wherein the web is formed by a number n of mat-forming wheels, where n is a whole number which is at least 3 and whereby the web is imparted greater manufacturing accuracy by virtue of a manufacturing method, wherein manufacture of the fibre web takes place at a speed in excess of 400 m/min, and wherein a desired manufacturing accuracy at the web speed is achieved by selecting a sufficient number n of mat-forming wheels.
1 Assignment
0 Petitions
Accused Products
Abstract
Method of forming a fiber web (210) intended for use in absorbent products, such as sanitary towels, by air-laying fibers. Separate air flows containing fibers are fed to a number n of different mat-forming wheels (160, 170, 180), where n is a whole number which is at least 2. Separate web layers (161, 171, 181) are formed on each mat-forming wheel. The fiber web (210) is formed by virtue of said web layers being combined downstream of the mat-forming wheels to form a common fiber web which is imparted very great manufacturing accuracy by virtue of the manufacturing method. The manufacturing speed and thus the web speed can be very high, and the desired manufacturing accuracy at the web speed concerned is achieved by selecting a sufficiently great number n of mat-forming wheels. The invention also relates to a fiber web manufactured according to the method.
99 Citations
19 Claims
- 1. A method of forming a web of fibres intended for use in absorbent products by air-laying fibres, wherein separate air flows containing fibres are fed to a number n of different mat-forming wheels, wherein a separate web layer is formed on each mat-forming wheel, wherein an intended fibre web is formed by virtue of said web layers being combined downstream of the mat-forming wheels to form a common fibre web wherein the web is formed by a number n of mat-forming wheels, where n is a whole number which is at least 3 and whereby the web is imparted greater manufacturing accuracy by virtue of a manufacturing method, wherein manufacture of the fibre web takes place at a speed in excess of 400 m/min, and wherein a desired manufacturing accuracy at the web speed is achieved by selecting a sufficient number n of mat-forming wheels.
Specification