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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0431802 (2009-04-29) |
등록번호 | US-9326896 (2016-05-03) |
우선권정보 | EP-08103761 (2008-04-29); EP-08103763 (2008-04-29) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 17 인용 특허 : 605 |
The present disclosure relates to a process for making an absorbent core comprising a nonwoven core cover that offers improved performance on holding back fine particulate material after having been exposed to external strain.
1. A process for making an absorbent core comprising at least a first nonwoven core cover and a superabsorbent polymer material, the process comprising steps of providing the first nonwoven core cover having an initial air permeability of less than 60 m3/(m2·min) according to EDANA 140.2-99;depositi
1. A process for making an absorbent core comprising at least a first nonwoven core cover and a superabsorbent polymer material, the process comprising steps of providing the first nonwoven core cover having an initial air permeability of less than 60 m3/(m2·min) according to EDANA 140.2-99;depositing the first nonwoven core cover on a support that includes open areas;depositing a superabsorbent polymer material onto the nonwoven core cover; andstraining the first nonwoven core cover by a first prescribed strain of 10-20% such that the initial air permeability of the first nonwoven core cover is increased by less than 18%. 2. The process of claim 1, including providing the first nonwoven core cover that includes spunbond fibers having a weight that is greater than or equal to 80% and less than or equal to 95% of a weight of the first nonwoven core cover. 3. The process of claim 1, including providing the first nonwoven core cover that includes a layer of meltblown fibers sandwiched between layers of spunbond fibers. 4. The process of claim 1, including providing the superabsorbent polymer having a weight that is greater than or equal to 80% of a weight of the absorbent core. 5. The process of claim 1, including depositing a hot melt adhesive on the first nonwoven core cover. 6. The process of claim 5 including enlacing the superabsorbent polymer with the hot melt adhesive. 7. The process of claim 1, including depositing the first nonwoven core cover on a first surface of the support and applying a vacuum to second surface of the support that is opposite to the first surface. 8. The process of claim 1, including depositing a second nonwoven web onto the superabsorbent polymer material. 9. The process of claim 1, providing the first nonwoven core cover that has a basis weight of 8 to 20 g/m2. 10. The process of claim 1, including folding the first nonwoven core cover to wrap the superabsorbent polymer material.
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