(1) Urea melamine formaldehyde and thiourea melamine formaldehyde resin sized fabrics are water repellented, so the crinkles of crapes were never swelled by water. The feeling of resin treated fabrics was rather slightly stiffy but the resilience, frictional strength and anti-shrinking were improved, (2) The sized fabrics were more durable in exposuring to the ultra-violet ray and had more tensile strength than the unsized ones, especially in the thiourea melamine formaldehyde resin, and it was also effective in anti-yellowing. (3) In Van Gieson's dyeing method the sized and the unsized showed different colourings.