Absorbent articles with different types of channels
AssigneeThe Procter & Gamble Company
InventorErnesto Gabriel Bianchi
Life of this patent
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Abstract
An absorbent article has a front side, a back side, a longitudinal axis, a liquid permeable topsheet, a liquid impermeable backsheet and an absorbent core between the topsheet and the backsheet. The absorbent core includes a first type of channels, wherein the top side and the bottom side of the core wrap are bonded to another, and a second type of channels, wherein the top side and the bottom side of the core wrap are not bonded or are less bonded to one another in this second type of channels than in the first type of channels. The absorbent material may also include cellulose and superabsorbent particles.
Claims20
An absorbent article having a front side, a back side, a longitudinal axis notionally extending in a longitudinal direction from a middle of the front side to a middle of the back side, wherein the absorbent article has a first length measured along the longitudinal axis, the absorbent article notionally having a front region having a second length of one third of the first length of the absorbent article, a back region having a third length of one third of the first length of the absorbent article, and a crotch region between the front region and the back region having a fourth length of one third of the first length of the absorbent article;
- the absorbent article comprising a topsheet on a wearer-facing side, a backsheet on a garment-facing side, and an absorbent core between the topsheet and the backsheet, wherein the topsheet is liquid permeable and the backsheet is liquid impermeable;
- wherein the absorbent core comprises:
- a core wrap comprising a top side and a bottom side;
- an absorbent material between the top side and the bottom side of the core wrap and having a deposition area, wherein the absorbent material comprises cellulose fibers and superabsorbent polymer particles;
- and
- at least two channels substantially free of absorbent material within the deposition area;
- wherein the at least two channels comprise at least one of a first type of channels and at least one of a second type of channels, wherein the top side and the bottom side of the core wrap are bonded to each other by a first bonding and an additional bonding in the first type of channels, and the top side and the bottom side of the core wrap are bonded by the first bonding but are not bonded by the additional bonding in the second type of channels, where in the first bonding is a different type of bonding than the additional bonding, and wherein the at least one of the first type of channels is separated in the longitudinal direction from the at least one of the second type of channels by at least 5 mm.
An absorbent core comprising:
- a core wrap comprising a top side and a bottom side;
- an absorbent material comprising cellulose fibers and superabsorbent polymer particles between the top side and the bottom side of the core wrap and having a deposition area;
- and
- at least two channels substantially free of absorbent material within the deposition area;
- wherein the at least two channels comprise at least one of a first type of channels and at least one of a second type of channels, wherein the top side and the bottom side of the core wrap are bonded to each other by a first bonding and an additional bonding in the first type of channels, and the top side and the bottom side of the core wrap are not bonded by the additional bonding in the second type of channels, where in the first bonding is a different type of bonding than the additional bonding, and wherein the at least one of the first type of channels is separated in the longitudinal direction from the at least one of the second type of channels by at least 5 mm, and wherein the longitudinal direction extends along a longest dimension of the absorbent core.
A method for making an absorbent core, comprising the steps of:
- providing a core wrap material;
- applying an inner core glue on the core wrap material;
- depositing an absorbent material comprising cellulose fibers and superabsorbent polymer particles on the core wrap material on a deposition area between the top side and the bottom side of the core wrap material, wherein the deposition area comprises at least two channels substantially free of absorbent material, and if inner core glue is present the deposition area at least partially corresponds to the inner core glue;
- forming a core wrap having the top side of the core wrap material and the bottom side of the core wrap material enclosing the absorbent material;
- and
- forming a first type of channels of the at least two channels and a second type of channels of the at least two channels by forming the first type of channels using a first bonding and an additional bonding to bond the top side and the bottom side of the core wrap to each other in the first type of channels, and forming the second type of channels with the first bonding and without the additional bonding between the top side and the bottom side of the core wrap in the second type of channels, where in the first bonding is a different type of bonding than the additional bonding, and wherein the first type of channels is separated in the longitudinal direction from the second type of channels by at least 5 mm, and wherein the longitudinal direction extends along a longest dimension of the absorbent core.
Dependencies are inferred from the claim text.