Flexible base web for a construction covering
US5458960A · kind A · utility
60Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1993 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Feb 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/685
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Flexible base web of a construction covering comprises a main layer extending at least over the greatest part of the thickness of the web and is constituted of a non-woven mineral fiber mat containing predominantly discontinuous mineral fibers. Said mat contains further blend fibers. The mat is manufactured using a dry method by means of an air stream whereby said blend fibers have become blended inside the mat during the dry method forming of the mat. The portion of said blend fibers is greater in the proximity of one of the surfaces of the mat than in the middle due to subsequent needling of the mat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.