Method of and apparatus for making continuous strand mat
US3934312A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1974 |
| Grant date | Jan 27, 1976 |
| Priority date | — |
| Expiry date | Aug 26, 1994 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H3/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention proposes a method of and appratus for making a mat of continuous strands of glass fibers or the like wherein each strand comprises a large number of individual filaments. The strands are deposited in mat form on a collection surface and are flooded with liquid to disperse individual filaments in the overall strand orientation. The flooded filaments are then conveyed to a drainage zone. As they are conveyed, the filaments pass through successive turbulent liquid regions wherein the filaments are locally deflected both counter-current to and con-current with the direction of conveyance, yet the general or overall strand orientation is retained. As a result, the transverse strength of the final mat is materially increased, and the mat has a multitude of fine, controllable interstices as required for some uses, e.g., asphalt-impregnated roofing mat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.