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US-2024164956-A1 · May 23, 2024 · US
Method of making high-elongation apertured nonwoven web
US8968614B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8968614-B2 |
| Application number | US-32134705-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 29, 2005 |
| Priority date | Jul 20, 2001 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
An extensible apertured nonwoven web, and a method for making such an apertured nonwoven web. In one embodiment the method comprises the steps of providing an apertured nonwoven web, incrementally stretching it in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying tension is less than the web width after incremental stretching. In another embodiment the method comprises the steps of providing a nonwoven web; weakening the nonwoven web at a plurality of locations to create a plurality of weakened, melt-stabilized locations; applying a first tensioning force to the nonwoven web to cause the nonwoven web to rupture at the plurality of weakened, melt-stabilized locations creating a plurality of apertures in the nonwoven web coincident with the weakened, melt-stabilized locations, incrementally stretching the nonwoven web in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying machine direction tension is less than the web width after incremental stretching. An apparatus for producing a web of the present invention by this method is also disclosed. The extensible apertured nonwoven web produced has a plurality of apertures each having a hole size greater than 2 mm 2 , and a hole aspect ratio less than 6, the nonwoven web having an open area greater than 15% and being capable of at least 70% extension in the cross machine direction at a loading of 10 g/cm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for making a highly extensible apertured nonwoven web comprising the steps of: a) providing a nonwoven web comprising spunbond bicomponent fibers, said nonwoven web having a length measured in a machine direction and a first width measured in a cross machine direction, said nonwoven web having a peak CD extensibility of at least 150%; b) weakening said nonwoven web at a plurality of locations to create a plurality of weakened, melt-stabilize…
Assignees
Inventors
Classifications
- A61F13/512Primary
Human Necessities · mapped topic
Textiles & Paper · mapped topic
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Textiles & Paper · mapped topic
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Frequently asked questions
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- What does patent US8968614B2 cover?
- An extensible apertured nonwoven web, and a method for making such an apertured nonwoven web. In one embodiment the method comprises the steps of providing an apertured nonwoven web, incrementally stretching it in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying tension is less than the web wi…
- Who is the assignee on this patent?
- Desai Fred N, Nakahata Hiroshi, Curro John J, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification A61F13/512. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).