Masao Kaneko

Production of Metal Fiber Mixed Conductive Plastics by Coiled Sheet Shaving Method

Plastics are common insulators which cannot shield electromagnetic waves and can easily be charged by static electricity. To make conductive plastics, we propose a laminated coiled sheet shaving method. By winding of plastic and thin metal sheet herein simultaneously using a fabric manufacturing apparatus and cutting the ends we produce a plastic combined with metal fibers, of which plastics and metal fibers are found evenly distributed. The plastic/metal fibers thus obtained are put through a heated dice for melting and curing and are then cut into appropriate lengths to produce pellets for injection molding.Stainless steel of 3 vol% in mixing ratio was found to have a volume resistivity of approximately equal to or lower than that of the electromagnetic shields of level (100 Ω·cm). In addition, the tensile strength of the injection molding was found to be reduced within increasing the amount of metal fibers.

Electrical Resistance Characteristics of Sintered Material used 20Cr-5Al Stainless Steel Fiber

Electrical resistance characteristics of sintered material made by stainless steel fiber has heat-resistance, and corrosion-resistance, and are therefore often used for polymer filter, automobile exhaust filters, and other filters.In this study, 20Cr-5Al stainless fibers are.sintered for the first time by the hot water soluble resin coated coilshaving methods and electrical resistance characteristics as sintered material were studied. Though the fiber heatresistance of this stainless steel fibers has been verified, there are almost no studies on the sintering characteristics, purposes, etc. of metal fibers.The electrical resistance characteristics of fiber sintered materials were investigated for the use in heaters, and the results showed that the specific gravity changes in the sintering, compression of rolling processes, and the specific resistance decreases as the porosity becomes decrease, indicating that the specific resistance of sintered material can be controlled.