Patents Assigned to Perfojet S. A.
  • Patent number: 5295997
    Abstract: A process for the production of a spunlace nonwoven cloth based on cotton fibers, which includes continuously advancing the cloth (1) based on cotton fibers, interlacing (2, 3) those fibers with the aid of a plurality of water jets under pressure, drying (8) the interlaced cloth, and, finally, taking delivery (10) of the spunlace cloth (9) thus obtained. After interlacing (2, 3) and before drying (8) the free water contained in the interlaced cloth (4) is drained (5), then the drained cloth is impregnated (6) using an aqueous solution of a polyamide-amine-epichlorohydrin (PAE) resin in an amount, measured as solids, of 0.2% to 1% of the weight of the cotton fibers, and after having expelled the excess solution, the impregnated cloth (7) is dried (8) at a temperature sufficient to at least trigger the cross-linking of the PAE resin deposited.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: March 22, 1994
    Assignee: Perfojet S. A.
    Inventors: Andre Vuillaume, Jean-Claude Lacazale