Dryer sheets including bicomponent fibers
US7838449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2008 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | Jan 8, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/641
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dryer sheet substrate is provided having improved loft and reduced fuzz wherein the substrate comprises relatively low denier bicomponent fibers. The bicomponent fibers may comprise two or more polymers having different melting temperatures, with the relatively lower melting temperature polymer making up at least a portion of the outer surface of the fiber. Upon heating to a sufficient temperature, the lower melting temperature fibers may soften and melt, providing bonding at crossover points of the fibers in the laid web. The web indicates advantageous characteristics with respect to thickness (loft), fuzz factor and ability to absorb a fabric treating composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.