US2017211235A1PendingUtilityA1

Absorbent paper product and method for manufacturing such absorbent paper product

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Assignee: SCA HYGIENE PROD ABPriority: Apr 2, 2014Filed: Apr 2, 2014Published: Jul 27, 2017
Est. expiryApr 2, 2034(~7.7 yrs left)· nominal 20-yr term from priority
D21F 1/0027D21H 27/02D21F 11/00D21F 1/00D03D 13/00D21F 11/006
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Claims

Abstract

A paper product including a fibrous web manufactured in a paper making machine including a fabric is disclosed. The web has a first and an opposite second side. At least one of the first and second sides of the web has, in a pattern repeat, a number of longitudinal, machine direction oriented compressed areas with a first density of fibers and a number of machine direction oriented bulky areas with a second density of fibers lower than the first density. The compressed areas correspond to machine direction oriented warp knuckles of warp yarns floating over weft yarns, and adjacent compressed areas, corresponding to warp knuckles of directly adjacent warp yarns, overlap in the cross-machine direction forming a continuous compressed pattern angled to the machine and cross-machine directions. A first line connects the centers of first two directly adjacent compressed areas of the continuous compressed pattern at a first angle different from a second angle of a second line connecting the centers of second two directly adjacent compressed areas of the continuous compressed pattern so that a line connecting the centers of all compressed areas forming the continuous compressed pattern is non-straight.

Claims

exact text as granted — not AI-modified
1 . A paper product comprising a fibrous web manufactured in a paper making machine, the paper making machine comprising a fabric,
 wherein the fibrous web has a first and an opposite second side, a machine direction and a cross-machine direction,   wherein at least one of the first and second sides of the fibrous web has, in a pattern repeat, a number of longitudinal, machine direction oriented compressed areas with a first density of fibers and a number of machine direction oriented bulky areas with a second density of fibers lower than the first density,   wherein the compressed areas correspond to machine direction oriented warp knuckles of warp yarns of the fabric floating over weft yarns of the fabric, and adjacent compressed areas, corresponding to warp knuckles of directly adjacent warp yarns, overlap in the cross-machine direction forming a continuous compressed pattern angled to the machine and cross-machine directions,   wherein a first line connecting the centers of first two directly adjacent compressed areas of the continuous compressed pattern is angled to the machine direction at a first angle different from a second angle of a second line connecting the centers of second two directly adjacent compressed areas of the continuous compressed pattern so that a line connecting the centers of all compressed areas forming the continuous compressed pattern is non-straight, and   wherein at least 50% of all adjacent compressed areas have an overlap of at least three consecutive weft yarns.   
     
     
         2 . The product according to  claim 1 , wherein the outer contour of the continuous compressed pattern is wavy. 
     
     
         3 . The product according to  claim 1 , wherein the line connecting the centers of all compressed areas has at least two turning points. 
     
     
         4 . The product according to  claim 1 , wherein the lines connecting the centers of all compressed areas of continuous compressed patterns adjacent in the cross-machine direction are non-parallel or parallel. 
     
     
         5 . The product according to  claim 1 , wherein a third line connecting the center of third two adjacent compressed areas of the continuous compressed pattern being angled to the machine direction at a third angle different from the first and second angles. 
     
     
         6 . The product according to  claim 1 , wherein adjacent continuous compressed patterns are formed in the machine direction and two adjacent continuous compressed patterns border a discontinuous bulky pattern between them. 
     
     
         7 . The product according to  claim 1 , further comprising cross-machine direction wrinkles from creping delimited by compressed areas of adjacent continuous compressed patterns, wherein the wrinkles have a cross-machine direction length, the cross-machine direction length of at least some wrinkles being different. 
     
     
         8 - 19 . (canceled) 
     
     
         20 . A paper product comprising a fibrous web manufactured in a paper making machine, the paper making machine comprising a fabric,
 wherein the fibrous web has a first and an opposite second side, a machine direction and a cross-machine direction,   wherein at least one of the first and second sides of the fibrous web has, in a pattern repeat, a number of longitudinal, machine direction oriented compressed areas with a first density of fibers and a number of machine direction oriented bulky areas with a second density of fibers lower than the first density,   wherein the compressed areas correspond to machine direction oriented warp knuckles of warp yarns of the fabric floating over weft yarns of the fabric, and the bulky areas correspond to valleys recessed relative to warp knuckles, wherein a continuous compressed pattern is formed by a plurality of compressed areas which are arranged directly adjacent in cross-machine direction and at least a majority of them being offset relative to each other in the machine direction,   wherein the continuous compressed pattern has at least one first group of compressed areas and at least one second group of compressed areas, the at least one first group being formed by a first number of directly adjacent compressed areas and the at least one second group being formed by a second number of directly adjacent compressed areas, the second number being smaller than the first number and the average offset of the compressed areas in the at least one first group is smaller than the average offset of the compressed areas in the at least one second group, and   wherein at least 50% of all adjacent compressed areas have an overlap of at least three consecutive weft yarns.   
     
     
         21 . The paper product according to  claim 20 , wherein the continuous compressed pattern of the pattern repeat is formed by at least 10 directly adjacent compresses areas. 
     
     
         22 . The paper product according to  claim 20 , wherein all compressed areas which form a continuous compressed pattern are offset relative to each other in machine direction. 
     
     
         23 . The paper product according to  claim 20 , wherein the first and second groups are arranged alternatingly. 
     
     
         24 . The paper product according to  claim 20 , wherein the first group is formed by first compressed areas and the second group is formed by second compressed areas, wherein the first compressed areas have a first length and the second compressed areas have a second length. 
     
     
         25 . The paper product according to  claim 24 , wherein the first length is different to the second length. 
     
     
         26 . The paper product according to  claim 20 , wherein the average offset of the compressed areas in the first group is between 0.5 and 2 or the average offset of the compressed areas in the second group is between 1.2 and 4 or both. 
     
     
         27 . The paper product according to  claim 20 , wherein directly adjacent compressed areas overlap each other in machine direction by at least half of their longitudinal length. 
     
     
         28 . The paper product according to  claim 20 , wherein the fibrous web has, in the machine direction, between 2 and 6 continuous compressed patterns per square inch. 
     
     
         29 . A paper product comprising a fibrous web manufactured in a paper making machine, the paper making machine comprising a fabric,
 wherein the fibrous web has a first and an opposite second side, a machine direction and a cross-machine direction,   wherein at least one of the first and second sides of the fibrous web has, in a pattern repeat, a number of longitudinal, machine direction oriented compressed areas with a first density of fibers and a number of machine direction oriented bulky areas with a second density of fibers lower than the first density,   wherein the compressed areas correspond to machine direction oriented warp knuckles of warp yarns of the fabric floating over weft yarns of the fabric, and the bulky areas correspond to valleys recessed relative to warp knuckles,   wherein a continuous compressed pattern is formed by a plurality of compressed areas which are arranged directly adjacent in cross-machine direction,   wherein the pattern repeat comprises in the machine direction a row of a plurality of first compressed areas and a row of a plurality of second compressed areas, the first compressed areas of the row being separated in the machine direction by first bulky separation areas, the second compressed areas of the row being separated in the machine by second bulky separation areas, the first compressed areas having a length in the machine direction being longer than the length of the second compressed areas, the first bulky separation areas being shorter in machine direction than the second bulky separation areas, and   wherein at least 50% of all adjacent compressed areas have an overlap of at least three consecutive weft yarns.   
     
     
         30 . The paper Product according to  claim 29 , wherein per pattern repeat the rows of first compressed areas form a plurality of first groups of directly adjacently arranged compressed areas and the rows of second compressed areas form a plurality of second groups of directly adjacently arranged compressed areas. 
     
     
         31 . The paper product according to  claim 30 , wherein the first groups and the second groups are alternatingly arranged in cross machine direction. 
     
     
         32 . The paper product according to  claim 30 , wherein directly adjacent compressed areas in the first groups are offset relative to each other in machine direction or that directly adjacent second machine direction yarns in the second groups are offset relative to each other in machine direction or both. 
     
     
         33 . A paper product comprising a fibrous web manufactured in a paper making machine, the paper making machine comprising a fabric,
 wherein the fibrous web has a first and an opposite second side, a machine direction and a cross-machine direction,   wherein at least one of the first and second sides of the fibrous web has, in a pattern repeat, a number of longitudinal, machine direction oriented compressed areas with a first density of fibers and a number of machine direction oriented bulky areas with a second density of fibers lower than the first density,   wherein the compressed areas correspond to machine direction oriented warp knuckles of warp yarns of the fabric floating over weft yarns of the fabric, and the bulky areas correspond to valleys recessed relative to warp knuckles,   wherein a continuous compressed pattern is formed by a plurality of compressed areas which are arranged directly adjacent in cross-machine direction,   wherein the pattern repeat comprises in the machine direction a row of plurality of third compressed areas comprising first compressed areas and second compressed areas separated by a separation area, the first compressed areas having a first length in the machine direction and the second compressed areas having a second length in the machine direction,   wherein the first length is smaller than the second length, and   wherein at least 50% of all adjacent compressed areas have an overlap of at least three consecutive weft yarns.

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