Absorbent article with improved side seams
View Patent ↗An absorbent article is provided that includes a top sheet and a back sheet joined to form side seam regions. An absorbent core is disposed between the top sheet and the back sheet; and laterally oriented elastics are disposed between the top sheet and the back sheet. The elastics include a first elastic region disposed adjacent to the front end and a second elastic region disposed adjacent the first elastic region. The second elastic region includes one or more elastic elements that extend between the side seam regions. The elastic elements have internal cuts adjacent the side seams in a configuration that relieves elastic tension adjacent the side seams regions.
1. A method for manufacturing an absorbent article comprising the steps of:
i. providing a single elastic member, an upper sheet, a lower sheet and an adhesive;
ii. applying said adhesive to at least one side of said single elastic member;
iii. assembling a laminate structure wherein said single elastic member is disposed between said upper sheet and said lower sheet;
iv. making internal cuts in said single elastic member so as to form at least one continuous elastic member and at least one discontinuous elastic member within said single elastic member;
v. assembling the absorbent article wherein said laminate structure is disposed between a body-facing surface and a garment-facing surface which are joined to form a side seam, the absorbent article comprises a front region and a back region, the at least one continuous elastic member extends continuously and without interruption across an entire width of one of the front region and the back region, and wherein said internal cuts are adjacent said side seam.
2. The method of claim 1 , wherein said elastic member is under elastic tension during assembly of said laminate structure.
3. The method of claim 1 , wherein said adhesive is applied discontinuously to said elastic member such that said elastic member is characterized as having adhesive-containing regions and non-adhesive-containing regions.
4. The method of claim 3 , wherein said internal cuts are made in non-adhesive-containing regions of said elastic member.
5. The method of claim 1 , wherein said internal cuts are made with a heated knife roller.
6. The method of claim 5 , wherein said adhesive is further disposed between said elastic member and said garment-facing surface.
7. A method for manufacturing a laminate structure comprising the steps of:
i. providing a single elastic member, an upper sheet, a lower sheet, and an adhesive, the single elastic member having a first end and a second end;
ii. discontinuously applying said adhesive to at least one side of said single elastic member such that said single elastic member is characterized as having adhesive-containing regions and non-adhesive-containing regions;
iii. assembling said laminate structure wherein said single elastic member is disposed between said upper sheet and said lower sheet, and wherein said single elastic member is under elastic tension during assembly;
iv. making internal cuts in said laminate structure so as to form at least one continuous elastic member and at least one discontinuous elastic member within said single elastic member, the continuous elastic member extending continuously and without interruption from the first end to the second end of the elastic member, wherein said internal cuts are made in the non-adhesive-containing regions of said elastic member such that the elastic tension of said elastic member is relieved in the area of said internal cuts.
8. The method of claim 7 , wherein said internal cuts are made with a heated knife roller.
9. The method of claim 7 , wherein said upper sheet and said lower sheet are joined at the edges of said laminate structure.