Thermally stable, binder-consolidated spunbonded web
US5219647A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1991 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Apr 5, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/699
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is described a thermally stable, binder-consolidated spunbonded web formed from load-carrying filaments and binder filaments where the melting point of the binder filaments is less than 30.degree. C below that of the load-carrying filaments. The binder and the load-carrying filaments are preferably made of polyesters. The basis weight of the spunbonded web is within the range between 50 and 500 g/m.sup.2, the denier of the load-carrying and the binder filaments is within the range between 1 and 20 dtex, and the proportion of binder filament is between 5 and 25 percent by weight. The web has a particularly high thermal resistance, i.e. a particularly high resistance to high downstream processing temperatures. It is usable for example as a support material for roofing membranes and as a tufting support and so on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.