Absorbent articles and methods and apparatuses for making absorbent articles with frangible pathways
The present disclosure relates to absorbent articles including elastic laminates, and more particularly, to methods and apparatuses for making absorbent articles having elastic laminates in front and/or back waist regions with frangible pathways.
1 . A method for assembling absorbent articles, the method comprising steps of:
providing a first elastic laminate, the first elastic laminate comprising elastic strands positioned between and connected with a first substrate and a second substrate, the elastic strands extending in a machine direction, the first elastic laminate further comprising a first edge separated from a second edge in a cross direction, wherein the first elastic laminate comprises a first laminate width defined by a distance extending in the cross direction between the first edge and the second edge;
advancing the first elastic laminate in the machine direction; and
forming a first frangible pathway in the first elastic laminate extending in the cross direction between the first edge and the second edge, the first frangible pathway comprising lines of weakness, wherein all elastic strands extending through the first frangible pathway are cut at the lines of weakness such that a first plurality of the elastic strands are cut only once and such that a second plurality of the elastic strands are cut more than once.
2 . The method of claim 1 , further comprising a step of forming a second frangible pathway in the first elastic laminate separated from the first frangible pathway in the machine direction.
3 . The method of claim 2 , further comprising steps of:
providing a second elastic laminate;
providing a chassis that comprises a body facing surface and a garment facing surface, and an absorbent core positioned between the body facing surface and the garment facing surface, the chassis further comprising a first end region and a second end region separated in a cross direction from the first end region by the crotch region; and
bonding the first end region of the chassis with the first elastic laminate and bonding the second end region of the chassis with the second elastic laminate.
4 . The method of claim 3 , wherein the first end region of the chassis is positioned between the first frangible pathway and the second frangible pathway.
5 . The method of claim 4 , wherein the first end region of the chassis overlaps portions of the first frangible pathway and the second frangible pathway.
6 . The method of claim 3 , further comprising steps of:
folding the chassis in the crotch region to position the first elastic laminate in a facing relationship with the second elastic laminate;
forming bonds between the first elastic laminate and the second elastic laminate, wherein the bonds are positioned between the first frangible pathway and the second frangible pathway; and
cutting the first elastic laminate and the second elastic laminate in the cross direction through the bonds to form a discrete absorbent article.
7 . The method of claim 3 , further comprising steps of:
forming a first region of the first frangible pathway and a second region of the first frangible pathway in the first elastic laminate;
subsequent to the step of forming the first and second regions of the first frangible pathway, bonding the first end region of the chassis with the first elastic laminate; and
subsequent to the step of bonding the first end region of the chassis with the first elastic laminate, folding a portion of the first substrate onto the second substrate and the first end region of the chassis such that the first region of the first frangible pathway overlaps the second region of the first frangible pathway.
8 . The method of claim 3 , further comprising a step of bonding a fastener component with the first elastic laminate.
9 . The method of claim 8 , wherein the first frangible pathway comprises a first region and a second region separated in the cross direction from the first region by a third region, and wherein the fastener component is positioned adjacent the third region of the frangible pathway.
10 . The method of claim 9 , wherein the fastener component is positioned between the first end region of the chassis and the first elastic laminate.
11 . The method of claim 10 , wherein the fastener component comprises hooks that are refastenably attachable with an outer surface of at least one of the chassis, the first elastic laminate, and the second elastic laminate.
12 . The method of claim 9 , further comprising cutting a slit in the third region adjacent the fastening component.
13 . The method of claim 2 , further comprising a step of forming a low-stretch zone in the first elastic laminate.
14 . The method of claim 13 , wherein the first end region of the chassis overlaps the low-stretch zone.
15 . The method of claim 13 , wherein the step of forming the low-stretch zone further comprises steps of:
intermittently bonding the elastic strands with the first substrate and the second substrate to form an unbonded region wherein the strands are not bonded with the first substrate and the second substrate; and
cutting elastic strands in the unbonded region such that the strands retract from the unbonded region.
16 . The method of claim 13 , wherein the step of forming the low-stretch zone further comprises a step of cutting the elastic strands into a plurality of discrete pieces.
17 . The method of claim 2 , wherein the second length of the second discrete pieces of elastic strands is defined by a distance extending in the machine direction between lines of weakness in the first row and lines of weakness in the second row.
18 . The method of claim 1 , wherein each line of weakness is oriented to define an offset angle relative to the machine direction that is greater than 0 degrees and less than 90 degrees.
19 . The method of claim 1 , wherein the step of forming the first frangible pathway further comprises cutting through the first substrate and the second substrate such that the lines of weakness comprise discrete cut lines.
20 . The method of claim 1 , wherein the step of forming the first frangible pathway further comprises pressure bonding the first substrate and the second substrate together such that the lines of weakness comprise discrete bonds wherein materials of the first substrate and the second substrate are fused together.
21 . The method of claim 1 , wherein the second plurality of elastics are that are cut more than once in the first frangible pathway form first discrete pieces and second discrete pieces of elastic strands, wherein the first discrete pieces of elastic strands comprise a first length and wherein the second discrete pieces of elastic strands comprise a second length, wherein the second length is greater than the first length.
22 . The method of claim 21 , wherein the lines of weakness are arranged in a first row and a second row neighboring the first row.
23 . The method of claim 22 , wherein the first length of the first discrete pieces of elastic strands is defined by a distance extending in the machine direction between neighboring lines of weakness in the first row.
24 . The method of claim 1 , wherein the first frangible pathway extends for a first frangible pathway total length from an outermost edge of a line of weakness nearest the first edge of the first elastic laminate to an outermost edge of a line of weakness nearest the second edge of the first elastic laminate.
25 . The method of claim 24 , wherein the first frangible pathway total length is equal to or less than the first laminate width.
26 . The method of claim 24 , wherein the first frangible pathway total length is greater than the first laminate width.