| abstract |
PURPOSE: To obtain the titled composite having firmly bonded polymeric component and useful for sanitary napkin, etc., by applying an aqueous solution containing a water-soluble unsaturated monomer, a polymerization initiator and a crosslinking agent to a continuous fibrous substrate, passing the coated substrate through a zone having specific temperature and humidity to effect the polymerization of the monomer and drying the product. n CONSTITUTION: An aqueous solution 10 containing a water-soluble ethylenic unsaturated monomer (e.g. sodium acrylate), a radical polymerization initiator (e.g. sodium persulfate) and a water-soluble crosslinking agent (e.g. polyethylene glycol diacrylate) is applied to a continuous fibrous substrate unwound from a unwinding roll 1 using a gravure roll 8 and a back roll 9. The coated substrate is continuously introduced into a polymerization zone 6 having an atmosphere inert to the polymerization reaction and maintained at ≥50°C and ≥15% relative humidity. The treated substrate is dried in a drying zone 7 and wound with a winding roll 2 to obtain the objective composite. n COPYRIGHT: (C)1987,JPO&Japio |