Title:
WET PROCESS CHOPPED FIBER MAT PRODUCTION
Document Type and Number:
WIPO Patent Application WO2003074785
Kind Code:
A3
Abstract:
The invention concerns a method for making a mat with chopped fibers useful for reinforcing thermosetting resins. The method comprises a step which consists in dispersing in white water chopped and dried fibers after they have been oiled with an oiling liquid containing an organosilane and a tackifier, then a step which consists in forming a web by passing the dispersion on a forming fabric through which the process water is drained, the fibers being retained in said fabric, then a step which consists in applying a binder, followed by a heat treatment step. Chopped fiber mats with uniform surface mass generally ranging between 50 and 1100 g/m<2> are obtained. The cut fibers hardly lose their filament texture within the mat.
Inventors:
DROUX MICHEL (FR)
Application Number:
PCT/FR2003/000701
Publication Date:
March 25, 2004
Filing Date:
March 05, 2003
Export Citation:
Assignee:
SAINT GOBAIN VETROTEX (FR)
DROUX MICHEL (FR)
DROUX MICHEL (FR)
International Classes:
C03C25/12; C03C25/50; D21H17/13; D21H13/40; D21H15/12; D21H15/06; (IPC1-7): D21H17/13; D21H13/40
Domestic Patent References:
| WO2001075204A2 | 2001-10-11 |
Foreign References:
| GB730054A | 1955-05-18 | |||
| US4626289A | 1986-12-02 | |||
| US20010009834A1 | 2001-07-26 | |||
| US6291552B1 | 2001-09-18 |
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