Creped nonwoven laminate loop fastening material for mechanical fastening systems
US5614281A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1995 |
| Grant date | Mar 25, 1997 |
| Priority date | — |
| Expiry date | Nov 29, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24992
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The creped nonwoven laminate loop material of the present invention includes a creped nonwoven layer attached to a support layer. The creped nonwoven layer may be, for example, a spunbond nonwoven web or a staple fiber bonded carded web. The support layer may be formed of any material that can be suitably attached or bonded to the creped nonwoven layer, including a foam, a plastic film or another nonwoven web. The exposed, top surface of the creped nonwoven layer includes raised "loop" areas having low fiber density and high z-directional fiber orientation that are designed to receive and engage the hook elements projecting from a hook material. The raised areas of the creped nonwoven layer are separated by non-raised areas having relatively higher fiber density and relatively lower z-directional fiber orientation when compared to the fiber density and z-directional fiber orientation of the raised areas. The primary areas of bonding or attachment of the bottom surface of the nonwoven layer to the top surface of the underlying support layer are the non-raised areas; in addition, some secondary bonding of the nonwoven layer to the support layer outside of the non-raised areas may exi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.