Process for manufacturing a flat, fibrous, supple substrate,...

Details Process for manufacturing a flat, fibrous, supple substrate,... Process for manufacturing a flat, fibrous, supple substrate,...

D - Textiles, Paper

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D21H 15/10 (2006.01) D21H 11/18 (2006.01) D21H 13/00 (2006.01) D21H 13/08 (2006.01)

Patent

CA 2017060

This invention relates to a process for manufacturing a flat, fibrous, supple substrate, difficult to tear, said process consisting in: preparing by fibrillation natural cellulosic fibers until their drainability is greater than 60° Schopper-Riegler; mixing in water a batch of cellulosic fibers thus refined and at least 30% by weight on dry matter of artificial fibers, with respect to the whole quantity of said artificial and cellulosic fibers; diluting the mixture obtained; and producing a substrate sheet from a machine supplied with the mixture. The invention is more particularly applicable to the manufacture of envelopes and sachets.

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