Resin impregnated fibrous panels and method of making same

Details Resin impregnated fibrous panels and method of making same Resin impregnated fibrous panels and method of making same

B - Operations, Transporting

27

N

B27N 3/12 (2006.01) B60R 13/08 (2006.01) C08J 5/24 (2006.01) C08K 7/02 (2006.01) E04B 1/74 (2006.01)

Patent

CA 2102959

ABSTRACT RESIN IMPREGNATED FIBROUS PANELS AND METHOD OF MAKING SAME A process of manufacturing a fibrous resinated panel comprises compressing a fibrous mat impregnated with a thermosetting resin system in a mold cavity defined between an upper and a lower inner mold surface. The mold surfaces are maintained at a temperature within a selected temperature range for a selected period of time whereby the thermosetting resin is substantially cured and the mat is shaped to conform to a desired contour, and thereafter removing the mat from the mold cavity. The process is characterized in that the thermosetting resin system comprises an essentially aqueous A-stage form resole-melamine composition containing residues of free melamine(s) to free aldehyde(s) to free phenolic compound(s) in a molar equivalent ratio ranging from about 0.2:1.5:1 to 0.8:3.5:1. The selected temperature range extends from about 204°C to about 316°C, and the selected period of time is greater than about 45 seconds.

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