Absorbent article configured for controlled deformation
View Patent ↗The present disclosure provides an absorbent article including an absorbent core and at least one barrier structure having a fluid shrinkable string attached thereto, wherein insult of the fluid shrinkable string by the user causes deformation of the peripheral edge of the barrier structure in the z-direction forming a leakage barrier between the user and the peripheral edge of the barrier structure.
1. An absorbent article configured for controlled deformation when insulted by a user, the absorbent article comprising:
a. an absorbent core having a garment facing surface and a body facing surface;
b. a deformable barrier structure positioned adjacent to the body facing surface of the absorbent core, the barrier structure having a longitudinal direction, a transverse direction, a longitudinally-extending centerline, a transverse-extending centerline, and a peripheral edge, the barrier structure further comprising at least one deformation enhancing element selected from the group consisting of embossing and perforation; and
c. a fluid shrinkable string attached to the deformable barrier structure in a pattern capable of providing forces to the barrier structure in both the longitudinal and transverse direction when insulted by a user.
2. The absorbent article of claim 1 wherein the fluid shrinkable string is attached to the barrier structure at two or more spaced apart points by an attachment means selected from the group consisting of stitching, adhesive bonds, cohesive bonds, thermal bonds, ultrasonic bonds, crimping and embossing.
3. The absorbent article of claim 1 comprising two or more fluid shrinkable strings.
4. The absorbent article of claim 3 wherein at least two fluid shrinkable strings intersect one another.
5. The absorbent article of claim 4 wherein at least one fluid shrinkable string is disposed substantially parallel to the longitudinal direction of the barrier structure and at least one shrinkable string is disposed substantially parallel to the transverse direction of the barrier structure.
6. The absorbent article of claim 4 wherein at least one fluid shrinkable string crosses the longitudinally-extending centerline and at least one fluid shrinkable string crosses the transverse-extending centerline.
7. The absorbent article of claim 1 wherein the fluid shrinkable string is disposed in a sine wave pattern that intersects the longitudinal center line of the barrier structure.
8. The absorbent article of claim 7 wherein the sine wave pattern has a wavelength in the range from about 0 to about 10.
9. The absorbent article of claim 7 wherein the sine wave pattern has an amplitude in the range from about 1 cm to about 3 cm.
10. The absorbent article of claim 3 wherein at least one fluid shrinkable string is present as a sine wave stitching pattern and at least one fluid shrinkable string is present as a longitudinal-extending stitching pattern disposed substantially parallel to the longitudinal center line of the barrier structure.
11. The absorbent article of claim 3 wherein the two or more fluid shrinkable strings are disposed in a longitudinal-extending stitching pattern substantially parallel to the longitudinal center line of the barrier structure.
12. The absorbent article of claim 3 wherein the two or more shrinkable strings have different shrinkage ratios.
13. The absorbent article of claim of 3 wherein the two or more fluid shrinkable strings are present as a concave or convex stitching pattern relative to the longitudinal center line of the barrier structure.
14. The absorbent article of claim 1 wherein the deformation enhancing element is a perforation having a longitudinal axis oriented substantially parallel to the longitudinally-extending centerline of the barrier structure, the perforation having a length from about 1 mm to about 50 mm.
15. The absorbent article of claim 1 wherein the deformation enhancing element is an embossing element that intersects at least one fluid shrinkable string.
16. The absorbent article of claim 1 , wherein the barrier structure has an oval, circular, or rectangular shape.
17. An absorbent article configured for controlled deformation when insulted by a user, the absorbent article comprising:
a. an absorbent core having a garment facing surface and a body facing surface;
b. a deformable barrier structure adjacent to the body facing surface of the absorbent core, the barrier structure having a peripheral edge and at least one deformation enhancing element selected from the group consisting of embossing and perforation; and
c. a fluid shrinkable string attached to the deformable barrier structure in a pattern capable of deforming the peripheral edge of the barrier structure in the z-direction to form a raised circumferential bank and a concave portion surrounded by the raised circumferential bank.
18. The absorbent article of claim 17 wherein the raised circumferential bank comprises an inside wall and an outside wall, the outside wall having an average slope angle of from about 10 degrees to about 150 degrees.
19. The absorbent article of claim 17 wherein the raised circumferential bank has a height, measured from the body facing surface of the absorbent core to the peripheral edge of the barrier structure, from about 1 mm to about 40 mm.
20. The absorbent article of claim 17 wherein the barrier structure has a body facing surface and an absorbent core facing surface, and wherein the concave portion has a depth, measured from the peripheral edge of the barrier structure to the body facing surface of the absorbent core, from about 1 mm to about 40 mm.