繊維集合体の溶接性に関する研究

Abstract

Conventional sewing process has been one of the hindrances in development of textile gathering materials as industrial materials.Synthetic fiber, most of which are of thermo-polymer, has made startling progress recently; hence there is a possibility that the conventional cutting and sewing processes are replaced with melt-cutting and welding processes.This report treats weldability and comments on microstructure and macroproperties of the weld achieved by ultrasonic welding method on flat woven cloth of 6-nylon as textile gathering materials, whose fineness was represented by 912 denier warps and 895 denier woofs, while density was 28 warps and 29 woofs per inch. In other words, (i) relationship between welding conditions (welding pressure, ultrasonic acting time) and strength of the weld;(ii) relationship between shape of the weld (shape of anvil) and welding joint strength;(iii) relationship between heat effect by X-ray diffraction and change in microstructure of the nylon woven cloth;and(iv) change in structure of woven cloth at the section of the weld, as observed by microscope are discussed in the report, and possibility of weld of textile gathering materials is looked for.The following summary can be made from the results of the present experiments. The possibility seems to have been found out to weld the nylon cloth, maintaining the properties as fiber and, obtaining necessary.The weld done with the type V anvil has stable structure and higher strength at the place of the weld.