Reinforcing fibre material for bituminous aggregates, method for producing same and use
US6866712B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2000 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Apr 12, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/298
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fibrous reinforcing material (1) is envisaged which is produced from glass filaments (2), advantageously consisting of fragments of glass yarns (3) or of chopped yarns, having a mean diameter of greater than five micrometers and a mean length of greater than six millimeters. The process comprises a selection step (4a, 4b) during which the glass yarns (3) consisting of filaments having a diameter greater than or equal to five micrometers and less than or equal to twenty-four micrometers are chosen, optionally a step (5) of mixing the selected yarns, and a milling step (6) during which the mixed yarns are chopped into filaments (2) having a length of greater than or equal to six millimeters. Advantageously, the fibrous material is in the form of flakes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.