PURPOSE: To obtain heat-weldable fiber having flexibility and elasticity, by adding magnetic material to one or both of the two kinds of components composed of film-forming polymers, and melt-spinning the components.
CONSTITUTION: A magnetic material such as iron, cobalt,etc. is added to (A) the first component made of a film-forming polymer such as polyolefin, polyester, etc. and/or (B) the second component having lower melting point than the first component by ≥20°C, e.g. polyethylene, ethylene-propylene copolymer, etc. The first and the second components are melt-spun in the form of side-by- side or sheath-core to obtain the objective hot-melt magnetic fiber. The cross- sectional roundness of the fiber of the second component is to be 50W100. The contents of the magnetic material in the first and the second components are preferably 0W95wt%.
FUJIMURA ISAO
NAKAJIMA SADAAKI
ABE MORIO
| JPS5739216A | 1982-03-04 | |||
| JPS57167416A | 1982-10-15 |