Crimped thermoplastic fibers for reinforcing concrete
US5985449A · kind A · utility
25Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Oct 8, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2976
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A crimped thermoplastic fiber for use in reinforcing concrete has a length in the range of 1/4 inch to 4 inches; an outer diameter in the range of 4 mils to 30 mils; a crimp frequency of 10-30 crimps per inch and an amplitude in the range of 1/2 mil-10 mils. The invention also includes a cylindrical bundle of the aforementioned fibers retained within an outer paper wrapper that dissolves and/or disintegrates within a concrete mixer in which the wrapped bundles are dispersed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.