Abstract
The mechanism for explaining how crease recovery was imparted to viscose rayon fabrics using urea formaldehyde resin, was studied by measuring the mutual relation between the physical properties such as crease recovery, imbibition value and elastic recovery of the viscose rayon fabrics treated with dimethylol urea solution and the changes in these properties by repeated soaping.
The following results were obtained:
1) Compared with the case of formaldehyde treatment, the increase of elastic recovery was relatively small and presumably not to be caused by the formation of the cross linkage between resin and cellulose.
Perhaps improvement of crease recovery of the treated fabrics was caused by the deposit of resin within the fiber.
2) The surface resin, easily removed by soaping, also contributed to improve crease recovery in the limited amount of content, as well as the fixed resin within the fiber.
