Absorbent structure comprising an oil-scavenger component
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-013/53
A61L-015/20
A61L-015/18
A61L-015/58
A61L-015/60
출원번호
US-0537088
(2012-06-29)
등록번호
US-9757491
(2017-09-12)
발명자
/ 주소
McKiernan, Robin Lynn
Meyer, Axel
Stiehl, Gabriele
Spitzmueller, Carolyn Ann
출원인 / 주소
The Procter & Gamble Company
대리인 / 주소
Carter, Kathleen Y.
인용정보
피인용 횟수 :
0인용 특허 :
27
초록▼
An absorbent structure comprising absorbent polymer particles supported by a substrate layer and immobilized on this substrate layer by a thermoplastic adhesive material and further comprising a component sorbing oily substances that may migrate from the thermoplastic adhesive material is disclosed.
An absorbent structure comprising absorbent polymer particles supported by a substrate layer and immobilized on this substrate layer by a thermoplastic adhesive material and further comprising a component sorbing oily substances that may migrate from the thermoplastic adhesive material is disclosed. The absorbent structure can be suitably incorporated in a disposable absorbent article.
대표청구항▼
1. An absorbent structure for use in disposable absorbent articles comprising: (a) a substrate layer,(b) absorbent polymer particles supported by said substrate layer,(c) a thermoplastic adhesive material comprising one or more oily substances, said thermoplastic adhesive material immobilizing said
1. An absorbent structure for use in disposable absorbent articles comprising: (a) a substrate layer,(b) absorbent polymer particles supported by said substrate layer,(c) a thermoplastic adhesive material comprising one or more oily substances, said thermoplastic adhesive material immobilizing said absorbent polymer particles on said substrate layer,(d) a particulate, single oil-scavenger component contacting said absorbent polymer particles and said thermoplastic adhesive material; wherein the oil-scavenger component is a monomer selected from the group consisting of an aliphatic mono- or dihydric alcohol having at least 12 carbon atoms and an aliphatic mono- or dicarboxylic acid having at least 12 carbon atoms;wherein the particulate, single oil-scavenger component is deposited exclusively on or beneath the absorbent polymer particles. 2. The absorbent structure according to claim 1 wherein said absorbent structure comprises less than 5% by weight of cellulose. 3. The absorbent structure according to claim 1 or 2 wherein the absorbent polymer particles, thermoplastic adhesive material comprising one or more oily substances and the oil-scavenger component in combination exhibits a ratio (AIoilscavenger/AIcontrol)>1 as measured according to the Absorption Index Method. 4. The absorbent structure according to claim 1 wherein the weight ratio of the absorbent polymer particles to the oil-scavenger component is from 2:1 to 1000:1. 5. The absorbent structure according to claim 1, wherein said absorbent structure further comprises a cover layer covering said absorbent polymeric particles, oil-scavenger component and thermoplastic adhesive material. 6. The absorbent structure according to claim 1, wherein said aliphatic mono- or dihydric alcohol is selected from the group consisting of 1-octadecanol, 1,2-dodecanediol, 1,2-hexadecanediol, 1-tetradecanol, 1,2-tetradecanediol, 1,14-tetradecanediol, 1,2-octadecanediol, and 1,12-octadecanediol. 7. The absorbent structure according to claim 1, wherein said aliphatic mono- or dicarboxylic acid is selected from the group consisting of dodecanoic acid, octadecanoic acid, hexadecanedioic acid, tetradecanoic acid, and tetradecanedioic acid. 8. The absorbent structure according to claim 1, wherein the substrate layer is selected from the group consisting of nonwoven material, foam and film. 9. The absorbent structure according to claim 1, wherein said oil-scavenger component is in particulate form and has an average particle size of from 0.005 μm to 5 mm. 10. A disposable absorbent article comprising an absorbent structure according to claim 1, wherein said disposable absorbent article is selected from the group consisting of diapers, incontinence pads, sanitary napkins and panty-liners. 11. A process for making an absorbent structure according to claim 1 comprising the steps of: (a) providing a substrate layer,(b) providing absorbent polymer particles,(c) providing a thermoplastic adhesive material comprising one or more oily substances,(d) providing an oil-scavenger component in particulate form, wherein the oil-scavenger component is a monomer selected from the group consisting of an aliphatic mono- or dihydric alcohol having at least 12 carbon atoms and an aliphatic mono- or dicarboxylic acid having at least 12 carbon atoms, and(e) depositing the absorbent polymer particles on the substrate layer, depositing the oil-scavenger particles exclusively on the absorbent polymer particles and depositing the thermoplastic adhesive material on the oil-scavenger particles. 12. The process according to claim 11 further comprising the step of depositing a further thermoplastic adhesive material on the substrate layer prior to step (e). 13. The process according to claim 11 or 12 wherein it further comprises the steps of providing a cover layer and disposing said cover layer over said absorbent polymer particles, oil-scavenger component and thermoplastic adhesive material. 14. The process according to claim 11 comprising the steps of repeating at least once steps (a) to (e) to obtain a further absorbent structure and combining the absorbent structures to obtain an absorbent core comprising several absorbent structures.
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