Method of making post-bonded grooved elastic materials
US10632027B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Jan 9, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Oct 29, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24612
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An elastic nonwoven laminate that contains an elastic film laminated to one or more nonwoven facings is provided. The nonwoven facing contains a conventional polyolefin and can also contain a polyolefin-based plastomer. The laminate is activated by grooving to decouple the nonwoven facing from the elastic film. To reduce fiber-pull out that can result due to activation by grooving, the laminate can be post-bonded at room or elevated temperatures and a specific range of pressures to compact the fibers of the facing and minimize fiber pull-out/fuzziness while not sacrificing the softness, elasticity, and feel of the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.