Foaming porous pad for use with a motorized device
View Patent ↗A foaming porous pad suitable for coupling to a hand-held device and for application to human skin includes a porous pad substrate and a foaming composition disposed on the porous pad substrate. The porous pad substrate includes a nonwoven pile fabric having a nonwoven backing layer and a pile comprising individual fibers extending from the backing layer. The nonwoven pile fabric has fibers having a denier of less than about 9. Other aspects of the disclosure include a kit including a foaming porous pad and a motorized handheld device, methods of making the foaming porous pad, and methods of using the foaming porous pad.
1. A method of making foaming porous pads suitable for coupling to a hand-held device and for application to human skin, said method comprising:
a. forming a nonwoven pile fabric by needlepunching individual fibers to form a backing layer comprising a substantially integrated, planar web of fibers primarily oriented in the plane of the web and needlepunching the substantially integrated, planar web of fibers to form a pile comprising individual pile fibers extending outwardly and away from the backing layer, wherein the fibers of the backing layer remain primarily oriented in the plane of the web, and the pile fibers extend outwardly and away from the plane of the web and end in at least one of free ends or loops spaced away from the backing layer; wherein at least about 90% of said pile fibers have a denier of less than about 9;
b. applying a foaming composition to the nonwoven pile fabric;
c. punching out individual porous pad substrates from the nonwoven pile fabric to form individual foaming porous pads; and
d. packaging a plurality of individual foaming porous pads.
2. The method of claim 1 , wherein applying a foaming composition to the nonwoven pile fabric is performed after punching individual porous pads substrates from the nonwoven pile fabric to form individual foaming porous pads.
3. The method of claim 1 , wherein applying a foaming composition to the nonwoven pile fabric is performed before separating punching individual porous pads substrates from the nonwoven pile fabric to form individual foaming porous pads.
4. The method of claim 1 , wherein applying a foaming composition comprises applying sufficient foaming composition to provide a foaming porous pad having about 50 to about 25 wt-% of the porous pad substrate and about 50 to about 75 wt-% of the foaming composition.
5. The method of claim 1 , wherein the backing layer has a higher fiber density than the pile.
6. The method of claim 1 , wherein needlepunching the substantially integrated, planar web of fibers to form a pile further comprises selecting needles to create cut fibers in the pile having free ends spaced away from the backing layer.
7. The method of claim 6 , wherein needlepunching the substantially integrated, planar web of fibers to form a pile further comprises selecting needles to leave looped, uncut fibers extending outwardly and away from the backing layer.
8. The method of claim 1 , wherein needlepunching the substantially integrated, planar web of fibers to form a pile further comprises selecting needles to leave looped, uncut fibers extending outwardly and away from the backing layer.
9. The method of claim 1 , wherein the pile fibers have a denier of up to about 6.
10. The method of claim 1 , wherein the foaming composition is applied to be present at at least about 50 weight percent of the foaming porous pad.