| 摘要 |
PURPOSE:To obtain preliminarily foamed particles using an uncrosslinked ethylenic resin as the substrate resin and having hardly any shrinkage in high foaming ratio, being broad in width of molding conditions in the mold, having good fusibility between particles, having small space between particles and capable of providing molded articles being beautiful in the appearance. CONSTITUTION:Preliminarily foamed particles of an uncrosslinked ethylenic resin consist of, as the substrate resin, an uncrosslinked ethylenic resin having a part capable of having a value of the complex viscosity in a range of 0.06-0.2 kg.sec/cm<2> over a temperature width of >=5 deg.C in a curve obtained by plotting a complex viscosity [letachi(omega)l] calculated from a torque value (lM*l) measured while changing a temperature at 10.5sec<-1> (omega) angular frequency using a vulcanizing tester which is a sort of dynamic viscoelasticity against the temperature. |
