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US 8,273,214 B2Granted
Manufacture of a veil made of glass and cellulose fibers in cationic medium
AssigneeSaint-Gobain Technical Fabrics Europe
InventorsMichel Droux, Carl Desaint Jean
Life of this patent
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Abstract
A process for producing a veil comprising glass fibers and cellulose fibers which includes dispersing cellulose fibers and chopped glass fibers into a white water, forming a bed in a forming device by passage of the dispersion over a forming fabric through which the white water is drained off, the fibers being retained on the fabric and the dispersion including, during passage, a cationic white water, and performing a heat treatment step an oven device.
Claims12
A veil, comprising:
- 2 to 12% by weight cellulose fibers based on a total weight of the veil;
- 70 to 80% by weight glass fibers based on the total weight of the veil;
- and
- 8 to 27% by weight binder based on the total weight of the veil;
- wherein the veil is a dry veil, the cellulose fibers and glass fibers are homogenously dispersed in the veil, and a tear strength of the veil is greater than 430 gf as measured by ISO 1974.
2 more elements
Dependencies are inferred from the claim text.