Casting process for making glass fiber preforms
US5407631A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1993 |
| Grant date | Apr 18, 1995 |
| Priority date | — |
| Expiry date | Oct 28, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/12
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus are disclosed for making preforms from a fibrous material such as glass fibers. The apparatus includes a porous mold form that, in carrying out the method, is attached over the open face of a charge box. The charge box and mold form are then rotated as a single unit to dump glass fibers or other fiberous reinforcement held in the charge box onto the mold form. Air is drawn through the porous mold form to thereby retain a layer of the glass fibers against the mold form. The mold form and charge box are rotated back to their initial position and then disconnected. A binder is sprayed onto the glass fibers if not otherwise already applied thereto. The binder is then cured, resulting in a unitary glass fibers preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.