Taped absorbent articles with front and crotch channels
AssigneeThe Procter & Gamble Company
InventorsErnesto Gabriel BIANCHI, Carsten Heinrich Kreuzer
Life of this patent
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Abstract
A taped absorbent article 20 comprising a crotch channel 26 having a crotch channel bond strength, and a front channel 56 having no bond or a front channel bond strength which is weaker than the crotch channel bond strength. The front channel is at least partially superposed with the landing zone 44 on which the back ear tapes 42 can be releasably fastened. During use, the front channel can delaminate to relieve stress on the landing zone and avoid accidental detachment of the tapes 42.
Claims20
A personal hygiene absorbent article having a front side, a back side, a longitudinal axis notionally extending in a longitudinal direction from the middle of the front side to the middle of the back side, the article having a length measured along the longitudinal axis, the article notionally having a front region having a length of one third of the length of the article, a back region having a length of one third of the length of the article, and a crotch region between the front region and back region having a length of the remaining third of the length the article;
- the absorbent article comprising a liquid permeable topsheet, a liquid impermeable backsheet, a pair of fastening tapes disposed symmetrically on each side of the longitudinal axis in the back region, wherein the fastening tapes can be releasably fastened to a landing zone in the front region of the article to form a closed article having a waist opening and two leg openings;
- and
- the article further comprising an absorbent core between the topsheet and the backsheet, wherein the absorbent core comprises an absorbent material layer between an upper substrate layer and a lower substrate layer;
- the absorbent layer comprising:
- vii) at least one crotch channel substantially free of absorbent material and predominantly disposed in the crotch region of the article;
- wherein the upper substrate layer and the lower substrate layer are bonded to each other through the crotch channel by a crotch channel bond having a crotch channel bond strength;
- and
- viii) at least one front channel substantially free of absorbent material and predominantly disposed in the front region of the article, the front channel being at least partially superposed with the landing zone;
- wherein the upper substrate layer and the lower substrate layer are either not bonded to each other through the front channel or are bonded to each other through the front channel by a front channel bond having a front channel bond strength, wherein the front channel bond strength is weaker than the crotch channel bond strength.
A process for making an absorbent article, the process comprising the steps of:
- ix) providing an upper substrate layer and a lower substrate layer;
- x) applying an hotmelt adhesive on at least one of the upper substrate layer and or the lower substrate layer;
- xi) depositing an absorbent material on at least one of the upper substrate layer and lower substrate layer to form an absorbent material layer, wherein the absorbent material layer comprises a crotch channel and a front channel, the channels being substantially free of absorbent material, wherein the adhesive is present between the absorbent material layer and at least one of the upper substrate layer and lower substrate layer;
- xii) bonding the upper substrate layer and the lower substrate layer to each other through the crotch channel by a crotch channel bond and through the front channel by a weaker front channel bond or without front channel bond,
- xiii) forming one or more core wrap seals to form an absorbent core;
- xiv) assembling the absorbent core thus obtained with other absorbent article components including the topsheet, backsheet, the pair of fastening tapes and the landing zone so that the front channel is at least partially superposed with the landing zone to obtain an absorbent article.
Dependencies are inferred from the claim text.