| 摘要 |
785,264. Finishing fabrics. UZIEL, V. Jan. 5, 1956 [Feb. 5, 1955; May 25, 1955], No. 478/56. Class 42 (1). [Also in Group XI] The cut edges of superposed layers of thermoplastic fabric 10 are stabilized against fraying by subjecting them simultaneously to a flow of hot gas which heats them to a temperature above the melting point of the fabric. As shown, the hot gas is provided by the flame 12 of a portable gas burner the nozzle end 18 of which is shaped to produce a flame in the form of a vertical layer. The flame is traversed over the fabric edges one or more times. The blowing effect of the flame causes the fabric edges to melt and set without adhesion to each other. The fabric edges may be arranged in a vertical plane as shown or may be slightly staggered relative to each other. Instead of a flame, a jet of air heated by electrical resistances (see Group XI) may be used. |
