Disposable absorbent sanitary article
First Claim
1. A disposable absorbent sanitary article having:
- a longitudinal axis;
an absorbent pad having longitudinal edges and placed between a liquid-impervious backing sheet and a hydrophobic internal covering sheet both having longitudinal edges and defining a respective sheet periphery, said backing sheet and said internal covering sheet being of identical shape and being joined together at least along their respective sheet peripheries and defining in the longitudinal direction a crotch area, a front portion and a rear portion;
said internal covering sheet having a lower face and comprising a central opening, said central opening being defined within said internal covering sheet by two longitudinal edges and two transverse edges and extending symmetrically with respect to the longitudinal axis, in the longitudinal direction over the absorbent pad;
a first set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed to the backing sheet and the covering sheet along the longitudinal edges thereof at least in the crotch area;
a second set of elastic elements fixed, in a stretched condition, to the covering sheet in the immediate vicinity of the longitudinal edges of the central opening;
two flaps arranged symmetrically with respect to the longitudinal axis and each flap made of a lateral strip of hydrophobic material, each flap having a first longitudinal edge fixed along a pad fixing line longitudinally extending proximate to a respective longitudinal edge of the absorbent pad, at least in the crotch area, and a second longitudinal edge fixed to the lower face of the covering sheet proximate to the second set of elastic elements; and
a protection sheet covering the absorbent pad, the protection sheet having a width greater than a width of the absorbent pad, at least in the crotch area, and being fixed to the absorbent pad along two longitudinally extending pad fixing lines proximate to the two longitudinal edges of the absorbent pad, said protection sheet including a liquid-permeable central strip between said two longitudinally extending pad fixing lines and two lateral hydrophobic strips extending therefrom, wherein said two lateral hydrophobic strips of said protection sheet define said respective lateral strips of hydrophobic material forming said two flap.
1 Assignment
0 Petitions
Accused Products
Abstract
The disposable absorbent sanitary article includes an absorbent pad placed between a liquid impervious external backing sheet and a hydrophobic internal covering sheet provided with a central opening extending over the absorbent pad. A first set of elastic members is fixed to the backing sheet and to the covering sheet along external edges thereof at least in a crotch area thereof and a second set of elastic members is fixed to the covering sheet along longitudinal edges of the central opening. Two hydrophobic flaps are each realized by fixing a first longitudinal edge of a strip of hydrophobic material close to an external longitudinal edge of the absorbent pad, and a second longitudinal edge to a lower face of the covering sheet close to the elastic members of the second set.
179 Citations
10 Claims
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1. A disposable absorbent sanitary article having:
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a longitudinal axis;
an absorbent pad having longitudinal edges and placed between a liquid-impervious backing sheet and a hydrophobic internal covering sheet both having longitudinal edges and defining a respective sheet periphery, said backing sheet and said internal covering sheet being of identical shape and being joined together at least along their respective sheet peripheries and defining in the longitudinal direction a crotch area, a front portion and a rear portion;
said internal covering sheet having a lower face and comprising a central opening, said central opening being defined within said internal covering sheet by two longitudinal edges and two transverse edges and extending symmetrically with respect to the longitudinal axis, in the longitudinal direction over the absorbent pad;
a first set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed to the backing sheet and the covering sheet along the longitudinal edges thereof at least in the crotch area;
a second set of elastic elements fixed, in a stretched condition, to the covering sheet in the immediate vicinity of the longitudinal edges of the central opening;
two flaps arranged symmetrically with respect to the longitudinal axis and each flap made of a lateral strip of hydrophobic material, each flap having a first longitudinal edge fixed along a pad fixing line longitudinally extending proximate to a respective longitudinal edge of the absorbent pad, at least in the crotch area, and a second longitudinal edge fixed to the lower face of the covering sheet proximate to the second set of elastic elements; and
a protection sheet covering the absorbent pad, the protection sheet having a width greater than a width of the absorbent pad, at least in the crotch area, and being fixed to the absorbent pad along two longitudinally extending pad fixing lines proximate to the two longitudinal edges of the absorbent pad, said protection sheet including a liquid-permeable central strip between said two longitudinally extending pad fixing lines and two lateral hydrophobic strips extending therefrom, wherein said two lateral hydrophobic strips of said protection sheet define said respective lateral strips of hydrophobic material forming said two flap. - View Dependent Claims (2, 3, 4, 5)
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6. A disposable absorbent sanitary article having:
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a longitudinal axis;
an absorbent pad having longitudinal edges and placed between a liquid-impervious backing sheet and a hydrophobic internal covering sheet both having longitudinal edges and defining a respective sheet periphery, said backing sheet and said internal covering sheet being of identical shape and being joined together at least along their respective sheet peripheries and defining in the longitudinal direction a crotch area, a front portion and a rear portion;
said internal covering sheet having a lower face and comprising a central opening, said central opening being defined within said internal covering sheet by two longitudinal edges and two transverse edges and extending symmetrically with respect to the longitudinal axis, in the longitudinal direction over the absorbent pad;
a first set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed to the backing sheet and the covering sheet along the longitudinal edges thereof at least in the crotch area;
a second set of elastic elements fixed, in a stretched condition, to the covering sheet in the immediate vicinity of the longitudinal edges of the central opening;
two flaps arranged symmetrically with respect to the longitudinal axis and each flap made of a lateral strip of hydrophobic material, each flap having a first longitudinal edge fixed along a pad fixing line longitudinal extending proximate to a respective longitudinal edge of the absorbent pad, at least in the crotch area, and a second longitudinal edge fixed to the lower face of the covering sheet proximate to the second set of elastic elements;
a third set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed longitudinally to the internal covering sheet between the second longitudinal edges of the flaps fixed to said covering sheet and the first set of elastic elements; and
wherein stretching of the elastic elements of the third set is greater than stretching of the elastic elements of the second set, in a stretched condition.
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7. A disposable absorbent sanitary article having:
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a longitudinal axis;
an absorbent pad having longitudinal edges, a top and a bottom surface, and placed between a liquid-impervious backing sheet and a hydrophobic internal covering sheet both having longitudinal edges and defining a respective sheet periphery, said backing sheet and said internal covering sheet being of identical shape and being joined together at least along their respective sheet peripheries and defining in the longitudinal direction a crotch area, a front portion and a rear portion;
said internal covering sheet having a lower face and comprising a central opening, said central opening being defined within said internal covering sheet by two longitudinal edges and two transverse edges and extending symmetrically with respect to the longitudinal axis, in the longitudinal direction over the absorbent pad;
a first set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed to the backing sheet and the covering sheet along the longitudinal edges thereof at least in the crotch area;
a second set of elastic elements fixed, in a stretched condition, to the covering sheet in the immediate vicinity of the longitudinal edges of the central opening;
two flaps arranged symmetrically with respect to the longitudinal axis and each flap made of a lateral strip of hydrophobic material, each flap having a first longitudinal edge fixed along a pad fixing line longitudinally extending proximate to a respective longitudinal edge on the top surface of the absorbent pad, at least in the crotch area, and a second longitudinal edge fixed to the lower face of the covering sheet proximate to the second set of elastic elements; and
a third set of elastic elements disposed, in a stretched condition, symmetrically with respect to the longitudinal axis and fixed longitudinally to the internal covering sheet between the second longitudinal edges of the flaps fixed to said covering sheet and the first set of elastic elements. - View Dependent Claims (8, 9, 10)
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Specification